The gas is fed back over the calcium oxide.

气体被氧化钙反作用。

And then back down directly over the knife.

然后我们回到餐刀。

Its records stretch back over a century.

它的记录可以追溯到一个多世纪以前。

And then slowly bring it back over.

然后慢慢挪回来。

I pulled the pillow back over my eyes.

我把枕头拉回来，压到我的眼睛上。

Go Back Over: I need to go back over the presentation to get it right.

我需要回顾一下报告，来把它写对。

I passed it on back over to the side.

我把它传回到一边。

The organization has records dating back over a century.

该组织有些记录可以追溯到一个世纪以前。

We're not letting her go back over there.

以后不要再让她去了。

I was there telling them back over there, I said, Look.

我在那里告诉他们，我说：" 看" 。

Harry swung the Cloak back over himself and walked on.

哈利重新把隐形衣盖在身上向前走去。

Award winners usually look back over their life or work.

获奖者通常会回顾他们的生活或工作。

They reversed. They backed over him to finish the job.

这不是什么肇事逃逸。

I'm gonna go back over there.

我要回那所房子去。

Yeah. You can put, then you slide it back over like this.

对，你可以移动，然后可以像这样把它向后翻。

Now get back over there and be with her. You're right.

现在赶紧回到她身边。言之有理。

Think back over these stories and poems. Which was the most exciting?

回顾一下你看过的故事和诗歌，哪个故事最有趣？

So that he's acceptable as he's coming back over the border.

这样等他回来就能顺利过境。

Looking back over the past year, I've done so many amazing things!

回首这过去的一年，我做了很多很棒的事情！

I look back over my shoulder to see if I'm being followed.

然后从肩膀上往后看 有没有人跟踪。