Leave a gap at the top and bottom so air can circulate.

在顶部和底部各留一点空隙，这样空气就可以流通了。

《柯林斯英汉双解大词典》

The top and bottom line of each column on the page should align.

版面每栏的头一行和末一行要对齐。

《牛津词典》

Concentrations of positively charged particles develop at the top and bottom of the cloud, but the middle region becomes negatively charged.

带正电荷的粒子集中在云团的顶部和底部，但中间区域形成的是带负电荷的粒子。

youdao

All of the lines of longitude meet at the top and bottom of the world.

VOA: special.2010.07.14

It involves two players and we'll call the Players I and II and Player I has two choices, top and bottom, and Player II has three choices left, center, and right.

此博弈有两个参与人,分别为I和II,参与人I有两个选择,上和下,参与人II有三个选择,左中右

耶鲁公开课 - 博弈论课程节选

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

Walt Disney reported quarterly earnings that were ahead of estimates on the top and bottom line.

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You can use it to inform both the top and bottom of the funnel.

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The textured design is complimented nicely by a metal border on the top and bottom.

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