She must know the play backwards by now.

她现在对这个剧本肯定是倒背如流。

《牛津词典》

I know the extra two characters are annoying; I know this will break backwards compatibility.

我知道这两个额外的符号十分讨厌；我也知道这将会破坏向后兼容性。

youdao

If you look at a movie that's being played backwards, you know it immediately because most things have a distinct time direction attached to them: an arrow of time.

假如你让电影倒带播放，你会发现任何事情都带有明显的时间方向性质，就像有东西拉着他们：时间箭头。

youdao

Delving deeper into the issue of software, you'll be glad to know that both systems are essentially backwards compatible.

ENGADGET: LeapFrog LeapPad 2 and Leapster GS Explorer hands-on (video)

So I don't know about you, I don't want to go backwards.

WHITEHOUSE: President Obama on the May Jobs Numbers

You know, it's not a function just of looking backwards, it's a function of looking forwards and how are we going to be making a series of decisions in a very dangerous world.

CNN: Transcript of Thursday's Democratic presidential debate