For Spider-Man to become genetically modified, the spider that bit him would have to release a retrovirus into his body.

為了修改蜘蛛人的基因，咬他的蜘蛛必須在他身體中釋放出一種反轉錄病毒。

Retroviruses carry genetic information which gets inserted into the DNA of cells.

反轉錄病毒攜帶著基因資訊，會嵌入細胞中的 DNA。

The cell then reads the new DNA to create specific functions and proteins for that cell.

接著細胞會讀取新的 DNA 並創造出特殊功能和蛋白質。

But this retrovirus would have to make its way to nearly every cell and have the ability to code for new and different functions in each cell.

然而反轉錄病毒必須散布到幾乎每個細胞，而且還要能在每個細胞中編碼出不同的新功能。

So while it's theoretically possible, it would also be pretty "amazing".

所以儘管理論上來說是有可能的，它依然非常「神奇」。

Silk: it's actually proportionately stronger and more flexible than steel.

絲，按比例來說，它其實比鋼鐵更堅固、柔韌。

Spider webs, one tenth the size of a piece of hair, are able to catch insects flying upwards of 15 miles an hour.

蜘蛛網，粗細只有頭髮的十分之一，卻可以抓住以時速 15 英里（24公里）飛來的昆蟲。

And, believe it or not, if a web were an inch thick in diameter, it could actually stop a fighter jet.

信不信由你，如果蜘蛛網的直徑有一英吋（2.54公分），它可以攔下一架噴射戰鬥機。

Strength: some spiders can lift up to 50 times their body weight. This muscle strength is directly related to size.

力量，有些蜘蛛能舉起比自己重 50 倍的東西， 這樣的肌力跟尺寸有直接的關係。

Think about your bicep. When you work out, it increases in height and width but not length.

想想你的二頭肌，當你健身時，它增加的是高度和寬度，而不是長度。

In this way, the strength of an organism increases as a square, or by 2 on the scale factor.

所以生物的力量是以二次方、或是二度空間比例尺增長。

But as organisms get bigger, their volume increases in height, width and length, as a cube, or by 3 on the scale factor.

但是當生物變大，牠們的體積在高度、寬度和長度上，會以三次方、或是三度空間比例尺增長。

This creates a ratio of 2:3, meaning the bigger the organism, the smaller its proportional strength.

這就形成了 2：3 的比例。也就是生物越大，相對力量就越小。

But because Spider-Man is human shaped and sized, the retrovirus would have to encode for the creation of more actin and myosin proteins.

因為蜘蛛人具有人類的外型和尺寸，所以反轉錄病毒得編碼創造出更多肌動和肌凝蛋白。

These proteins affect the contraction abilities of muscles, and in effect could make a human stronger.

這些蛋白影響肌肉收縮的能力，能有效強化人體。

Climbing walls? Not a problem for spiders, they have tiny hairs on each leg.

爬牆？對蜘蛛來說這是小菜一疊，它們每隻腳上都有細毛。

And these hairs have tons of even smaller hairs with triangular ends, which interact within nanometers of the atoms on the surface.

這些毛上還有更多更細的毛，它們末端呈現三角狀，會和物體表面幾奈米大小範圍內的原子相互作用。

This creates electrostatic forces, allowing them to stick with a strength of 170 times their own weight.

這會產生靜電力，讓它們能以自身重量 170 倍的力量黏附上去。

To capture this ability, Spider-Man would need permanently hairy hands and feet, which may not overly impress his damsels in distress.

想獲得這能力，蜘蛛人需要一直保持「毛手毛腳」，而這可能不會給等待救援的少女留下好印象。

And finally, what about the Spidey Sense?

還有最後一點，「蜘蛛感應」呢？

Well, spider hairs are extremely sensitive to vibration and air pressure changes.

蜘蛛的毛對震動和氣壓的改變極度敏感。

But this means that Spider-Man could only perceive things that are near him, and not events at a distance.

但這意味著蜘蛛人僅能感知到身邊的東西，而不是遠方的事件。

Got a burning question you want answered?

還有燃眉之急的問題想要解答嗎？

Ask it in the comments, or on Facebook and Twitter, and subscribe for more weekly science videos.

請在留言、臉書或推特上發問，並訂閱獲得更多每週科學影片。