Ponds would freeze from the bottom up.

如果池塘是从底部向上结冰的。

麻省理工公开课 - 固态化学导论课程节选

In this case, it's cutting up from the bottom end, which makes sense because the thing I'm looking for is always bigger than the midpoint and then, I don't know, let's pick something in between. Somebody want-- ah, I keep doing that-- somebody like to give me a number?

排除元素，这是讲得通的，因为我总是找比中点大的元素,那让我们挑一个同,中点之间的元素吧,我再来试试，谁给我个数字吧,我知道你们想给我些其他东西？

麻省理工公开课 - 计算机科学及编程导论课程节选

There's an angler fish at the bottom of the ocean that has a rod sticking up from the top of its head with a lure to capture other fish to fool them in thinking that this is something edible and then to themselves be devoured.

在深海中生活着琵琶鱼,这种鱼的头顶会长出鱼竿状的长刺,用于引诱和捕获其他鱼类,让它们误认为那是食物,然后它们自己就被吃掉了。

耶鲁公开课 - 心理学导论课程节选