The contract comes into effect today, we can "t go back on our word now."

合同已于今日生效，我们不能反悔了。

youdao

Here the band performs "Can't Go Back" from "World Wide Open."

VOA: special.2009.09.11

You denature them, you can watch them denature because the egg white turns from clear to white and it doesn't go back.

它们变性了,这种变性是可以观察到的,蛋清由透明变为白色,再也变不回去

耶鲁公开课 - 生物医学工程探索课程节选

so at the moment when I can't go back to see her, I go to training academies.

所以我不能回去找她的时候，我就去培训学校。

做头发是免费的 - SpeakingMax英语口语达人

Ms. VIGORRA: Is that freedom at all if we can't go back to our countries?

NPR: Miami's Cuban Exile Community Evolves Again

Still, I can't go back and knock down the columns and yank out the vines.

NPR: Watching a Memory Shift over Time

The problem for many runners is that once they have gone barefoot, they can't go back.

WSJ: Barefoot Jocks Keep Gym Members on Their Toes