null

US /nʌl/

・

UK /nʌl/

B2 中高級

adj.形容詞無效的

That contract is null because nobody signed it

影片字幕

美國接連出現不明飛行物！軍方一週內四次擊落！（Fourth U.S. Military shoot down of an unidentified object in a week）

美國接連出現不明飛行物！軍方一週內四次擊落！（Fourth U.S. Military shoot down of an unidentified object in a week）

使用 Pandas Python 進行探索性數據分析 (Exploratory Data Analysis with Pandas Python)

使用 Pandas Python 進行探索性數據分析 (Exploratory Data Analysis with Pandas Python)

Okay, so the next step here is to try to identify if where missing values exist in the data frame and how often they occur, so the command we're going to run to identify missing values or null values is the na command.
好的，下一步是嘗試識別數據幀中是否存在缺失值，以及缺失值出現的頻率，所以我們要運行的識別缺失值或空值的命令是 na 命令。
If you run is na on this data frame, in every single row and column, it'll tell us if there is a null value, but this is a little bit overwhelming to look at at first, and we would like to instead see a sum of the number of null values per column, so here we can see that for this data set, the status is null for 213 of our rows.
如果在這個數據幀上運行 is na，在每一行和每一列中，它都會告訴我們是否存在空值，但這一開始會讓人有點不知所措，我們希望看到的是每一列的空值數量總和，所以在這裡我們可以看到，在這個數據集中，有 213 行的狀態為空。

胡迪尼並不可怕--第二部分：物品 (Houdini Isn't Scary - Part 2: Objects)

胡迪尼並不可怕--第二部分：物品 (Houdini Isn't Scary - Part 2: Objects)

So what we'll do is we'll drop a null.
是以，我們要做的就是刪除一個空值。
So in your network view, press tab, type null, and place it after your mountain, connect your mountain to your null, and set your display flag on your null.
是以，在網絡視圖中按下 tab 鍵，輸入 null，將其放在山峰之後，將山峰連接到 null，並在 null 上設置顯示標誌。

介紹 Dagster+ (Introducing Dagster+)

介紹 Dagster+ (Introducing Dagster+)

So you've written a Daxter asset check, which counts the number of null values on the primary key.
是以，你編寫了一個 Daxter 資產檢查，用來計算主鍵上的空值數量。

唐納德-特朗普總統就職典禮回顧 (Recap of President Donald Trump's inauguration)

唐納德-特朗普總統就職典禮回顧 (Recap of President Donald Trump's inauguration)

They'll all be null and void within about what?
它們會在多長時間內全部失效？

特朗普贏了嗎？| 灰色地帶 (Is Trump winning? | The Gray Area)

特朗普贏了嗎？| 灰色地帶 (Is Trump winning? | The Gray Area)

Authority null and void and there are again There are clear cases of them trying to get around what the court is doing that I think constitute disobedience They're not they're not most of the cases, right?
有明顯的案例表明，他們試圖繞過法院正在做的事情，我認為這構成了不服從。

M4 MacBook Air 與各代產品對比 | 哪款開發機更勝一籌？ (M4 MacBook Air vs all generations | Which Dev Machine Wins?)

M4 MacBook Air 與各代產品對比 | 哪款開發機更勝一籌？ (M4 MacBook Air vs all generations | Which Dev Machine Wins?)

I'm going to start that over because usually I send this to dev null so that we're not seeing all that output printed out.
我要重新開始，因為我通常會把它發送到 null，這樣我們就不會看到所有的輸出都打印出來了。

第五週 (Week 5)

a null character, or backslash zero at the very end.
一個空字符或反斜杠零在最後。
if s equals null and t equals null.
如果s等於null和T等於null。

500 個最常見的英語單詞 | 英式詞彙和發音 | 第 14 部分 (500 Most Common English Words | British Vocabulary and Pronunciation | Part 14)

500 個最常見的英語單詞 | 英式詞彙和發音 | 第 14 部分 (500 Most Common English Words | British Vocabulary and Pronunciation | Part 14)

Caress caress carp cup cartridge cartridge cask cask cataract cataract caterpillar caterpillar cathedral cathedral cauliflower cauliflower catastrophe catastrophe cavalry cavalry seed seed celery celery census census cessation cessation chaste chaste chatter chatter chirp chirp chisel chisel chivalrous chivalrous cord cord cipher cipher clad clad clang clang clasp clasp clatter clatter clench clench clod clod clove clove clumsiness clumsiness clutch clutch course coax coax cobbler cobbler cod code cod liver cod liver cognition cognition coil coil collaborate collaborate cult colt combustible combustible comet comet commence commence commotion commotion compel compel compile compile compliance compliance compose compose compress compress comprise comprise concession concession conciliate conciliate concord concord condensed condensed confederate confederate conferring confer confiscate confiscate conform conform conjecture conjecture conjunction conjunction consensus consensus consignment consignment consternation consternation constituent constituent constrain constrain construe construe consume consume contend contend contentment contentment continual continual contraceptive contraceptive contrivance contrivance convey convey cooperate cooperate coordinate coordinate coral coral coronation coronation correspond correspond cozy cosy countess countess crater crater crayfish crayfish crease crease creche creche credulous credulous crescent crescent crest crest croak croak crochet crochet crockery crockery crumple crumple crusade crusade cudgel cudgel current current cutlery cutlery cutlet cutlet cyber cyber Cyprus Cyprus daffodil daffodil dainty dainty dandelion dandelion Dane Dane dangle dangle days days debit debit deceit deceit deduce deduce default default defer defer defiance defiance deficiency deficiency deform deformity defrost defrost degenerate degenerate degradation degradation deity deity dejection dejection delicacy delicacy deluge deluge demolish demolish demure demure deplorable deplorable deport deport deprivation deprivation deride deride desirable desirable desolate desolate despot despot deter deter detergent detergent detriment detriment devolution devolution diarrhea diarrhea dilate dilate diligence diligence diminish diminish disapproval disapproval disbelief disbelief discard discard disciple disciple discomfort discomfort discredit discredit dismal dismal dispatch dispatch dissatisfaction dissatisfaction domicile domicile dormitory dormitory dowry dowry drape drape drizzle drizzle drone drone drought drought drowsy drowsy dusk dusk Dutch Dutch dynasty dynasty dysentery dysentery earnings earnings easel easel edible edible egoism egoism embankment embankment embark embark embroider embroider empower empower endorse endorse enrich enrich entail entail envisage envisage er er escalator escalator evasion evasion excel excel exemption exempt exhale exhale expedient expedient expend expend extinct extinct fable fable facilitate facilitate falcon falcon fastidious fastidious fathom falcon feet feet feeble feeble ferocious ferocious fiber fiber fiddle fiddle fig thick fillet fillet flake flake flask flask flippers flippers flourish flourish flute flute foliage foliage fortress fortress frenzy frenzy funnel funnel guild guild gills gills google google giraffe giraffe girdle girdle gloss gloss gnat gnat go between go between grope grope guile guile gust gust haphazard haphazard harness harness haze haze half half hedge hedge helm helm heritage heritage heron heron herring herring hugh hugh hijack hijack hind hind hurdle hurdle hurl hurl hybrid hybrid icicle icicle ignoble ignoble illuminate illuminate imaginable imaginable immense immense imminent imminent immobile immobile immoderate immoderate impatience impatience impossibility impossibility imprison imprison improbable improbable imprudence imprudence impure impure inaccessible inaccessible inaccurate inaccurate inaudible inaudible inaugurate inaugurate inclination inclination incomparable incomparable incompatible incompatible incomprehensible incomprehensible indecent indecent indictment indictment indifference indifference indigestion indigestion infantry infantry inflame inflame inflict inflict influenza influenza ingenious ingenious inhabit inhabit inhuman inhuman innumerable innumerable inoculate inoculate inoffensive inoffensive impatient impatient inquire inquire inscribe inscribe insensible insensible inseparable inseparable insolence insolence installment installment insufficient insufficient insular insular insulation insulation interact interact intermediary intermediary intolerable intolerable intoxicate intoxicate invaluable invaluable Invariable invariable Irreparable irreparable irreplaceable irreplaceable Jackal jackal Jolly Jolly Jubilee Jubilee Judicial judicial Tattered tattered Baffle baffle Juggle juggle Justification justification Languish languish Lark lark Lateral lateral lattice lattice leaden leaden leech leech Livelihood livelihood Loneliness Loneliness Madden Madden Maggot maggot Malignant malignant malnutrition malnutrition Mandate Mandate manhood manhood Maneuver Maneuver Manpower Manpower Mayor Mare Marvel Marvel Mayonnaise mayonnaise Measles measles Mediate Mediate Melancholy melancholy Minimize Minimize Miscalculate Miscalculate Mischief mischief Misty Misty Misuse misuse Monastery Monastery More more Mortify Mortify Mo mo Multicultural Multicultural Mutton Mutton Navigable navigable Nitrogen Nitrogen Nobility Nobility Non stop non stop Novice novice Noxious noxious Null null Nutshell Nutchell Oats oats Obstinacy obstinacy Obstruct obstruct Odious odious Odor Odor offhand offhand onset onset Onward Onward Opaque opaque optical optical orator orator orchid orchid or ostrich ostrich padlock podlock pagan pagan palate palate Partridge partridge peacock peacock pete pete Pedigree pedigree Penetrate Penetrate Peril peril perish perish Perpetual perpetual perseverance Perseverance Pest pest pheasant pheasant Pickpocket pickpocket Pier Pier Placard placard Placid placid Plank plank Plough plough pluck pluck Poacher poach Pollute pollute Porcelain Porcelain Poor poor Porous porous Portuguese Portuguese Potent Potent Poultry Poultry Precarious Precarious Predicament Predicament Preface Preface.
鯉魚魚缸墨水匣桶瀑布毛蟲大教堂菜花災難騎兵種子芹菜人口普查停止貞潔喋喋不休啾啾聲鑿子騎士精神繩子密碼穿著叮噹聲拍擊聲緊握塊丁香笨拙離合器課程哄騙修鞋匠鱈魚魚肝油認知線圈合作邪教小馬可燃彗星開始騷動迫使編譯合規性組成壓縮包含讓步協調一致性濃縮盟友授予沒收符合推測連接共識貨運驚愕成分限制闡釋消費爭奪滿足感持續的避孕藥發明傳達合作協調珊瑚加冕聯繫舒適女伯爵

政治學者だけど「中國」について質問ある？ (政治学者だけど「中国」について質問ある？| Tech Support | WIRED Japan)

政治學者だけど「中國」について質問ある？ (政治学者だけど「中国」について質問ある？| Tech Support | WIRED Japan)

The Philippines took China to court in 2016, the world court, which ruled that China's historical claims to the South China Sea are null and void.
2016 年，菲律賓將中國告上法庭，國際法庭裁定中國對南海的歷史主張無效。