Why did it fall down?

它为什么会掉下来？

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If you build a toy house with a pack of cards, a slight shake of the table will make it fall.

如果你用纸牌搭一个玩具房子，桌子轻微的震动就会使它倒塌。

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"There're a thousand things that could go wrong with a computer-generated facial performance, and any one of those could make it fall into the uncanny valley," he says.

他说:“电脑生成的面部表情有一千种可能出错的地方，其中任何一种都可能让它陷入恐怖谷。”

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It falls into the basket and that completes a hole. If for some reason the discdoesn't fall into the basket, you still need to tap out and into the basket."

VOA: standard.2010.08.03

But I choose to walk, and just walking in the seasons whether it's snowing or raining, or gorgeous sunny fall day.

但是我选择走路，什么季节都是如此,无论是雪天，雨天，亦或是秋高气爽。

普林斯顿公开课 - 人性课程节选

Everybody's going to put the cup down and assumes it's going to stay there but not fall to the floor.

每个人放下杯子时,都会假设杯子会稳稳地搁在那里,而不是掉在地上。

普林斯顿公开课 - 人性课程节选

The company's insular, compartmentalized style of management has let it fall behind in too many vital areas.

FORBES: Magazine Article

He asked his publishers to pull Rage from publication and let it fall out of print shortly thereafter.

FORBES: The Media is an Accomplice in Public Shootings: A Call for a "Stephen King" Law

Why, of all the doctors in the world, did it fall upon him to finally stop polio in its tracks?

CNN: Commentary: Heroes in lab coats