It is the top and the bottom.

就是顶部和底部。

youdao

n We're interested in x divided by n. So let's divide both the top and the bottom by n squared.

我们感兴趣的是x除以,所以同时把分子分母除以n平方。

youdao

Just to be clear, the jumper velocity (and thus kinetic energy) of the jumper at the top and the bottom are both zero.

我来解释一下，整个跳楼过程中，跳楼者的速度（由此便产生了动能）在起跳处和着地处都为零。

youdao

They have an opening at the bottom for the fire and a place on top to put a pot.

VOA: special.2010.02.01

We just go through the list top to bottom, left to right, and cross names off as we go.

我们会从上到下，从左到右看那个问题清单，如果解决了就把名字擦掉。

哈佛公开课 - 计算机科学课程节选

Now, the top is different from the bottom because the sperm came in this side physically and not the other side.

现在,细胞上半部分和下半部分不同了,因为精子如果从一边进入卵子,就不会再从另一边进入了

耶鲁公开课 - 生物医学工程探索课程节选

It looked like a giant octopus head with tentacles jutting from the top and the bottom a fearful symmetry.

NEWYORKER: Show The Monster

By giving smaller bonuses and less stock, organizations could have reduced the pay distance between the top and the bottom.

FORBES: Executive Compensation's New Normal: A Missed Opportunity

Official figures for Santa Clara County (which, however, go up only to 1993) show incomes for both the top and the bottom quartiles rising in tandem.

ECONOMIST: Great for business, but what about the people?