mental arithmetic
US
・UK
B2 中高級
n. (u.)不可數名詞心算
She's very quick at mental arithmetic.
影片字幕
BBC 6 Minute English June 09, 2016 - Young and in business
06:06
- Rob: I wasn't good at doing sums in my head ... you know ... mental arithmetic.
Rob:我不擅長心算…你知道的…直接在腦中算數
為什麼中國人數學好？- 為什麼中國人（E4 (Why Are Chinese People Good at Math? - Why Chinese (E4))
12:11
- To get good mental arithmetic, you need to memorize about 60 things and memories about 50 times tables and then a few of these number bonds, like basic sums of digits.
要想把心算學好，你需要記住60個左右的東西，記憶50個左右的倍數表，然後再記住其中的一些數字鍵，比如基本的數字之和。
我們的合作伙伴能否改變？ (Can Our Partners Change?)
05:45
- We need them to be softer and more focused. These are the signs that we need from them and upon which everything else hangs, the survival of a relationship or a marriage, where children go to school, who owns a house, what's in a will. The pain and strangeness is deepened because they don't say a flat-out no. They insist, repeatedly, that they do love us. At points, they appear to listen to us. They don't want the connection to unravel either. The things we're trying to get them to do have an elemental simplicity, a few more words here and there, not those annoying behaviours, some more gestures at key moments. You'd think this was entirely obvious. So many people, we included, have absolutely no problem with such matters. They come to us as readily as to some does the gift of mental arithmetic or a facility with language. We suffer because we can't, unlike in other areas of endeavour, see or grasp the effort required to change psychologically.
我們需要他們更柔和、更專注。這些都是我們需要從他們那裡得到的暗示，也是其他一切的基礎，關係或婚姻的存續，孩子在哪裡上學，誰擁有房子，遺囑裡寫了什麼。痛苦和陌生感之所以加深，是因為他們沒有一口回絕。他們一再堅持，他們確實愛我們。有時，他們似乎在聽我們說話。他們也不希望這種聯繫破裂。我們想讓他們做的事情其實很簡單，就是在這裡和那裡多說幾句話，不要做那些令人討厭的行為，在關鍵時刻多做一些手勢。你會覺得這是顯而易見的。很多人，包括我們在內，在這些問題上完全沒有問題。就像有些人擁有心算天賦或語言能力一樣，我們也能輕
