安全到达底部后，我走进厨房，在冰箱里看了看。

Once safely arrived at the bottom, I walked into the kitchen and looked around in the refrigerator.

youdao

两年前，住房市场似乎已到达底部。

Two years ago, housing appeared to hit bottom.

youdao

哪一个将首先到达底部？

Which one will reach the bottom first?

youdao

You can kind of see where the syntax is going, looks like a loop, but you can kind of put blocks inside of you, and the little arrow suggests that once you get to the bottom just like our socks example, you're gonna do the following again.

从某种程度上你可以看到它的语法构成,像个循环，你也可以把，一些程序块放到循环中，如同短袜的例子，这个小箭头暗示你一旦到达底部,你将会重复接下来的事情。

哈佛公开课 - 计算机科学课程节选