把车轮拧紧很重要，否则它们会振动而松脱。

It's important to tighten up the wheels properly, otherwise they vibrate loose and fall off.

《柯林斯英汉双解大词典》

它有时间逃到安全的地方，否则它们也可以保持不动。

It has time to escape to safety, or else they can just remain motionless.

youdao

在你能控制它们时就放弃它们吧，否则它们会控制你。

Give them up when you have control over them, or they will control you.

youdao

Is the first part. That says, I took the branch through here that eventually got to the end and said, there wasn't a solution, in which case I'mgoing to print out, there ain't no solution, otherwise I'll print out the pieces. All right, let's check it out. Ah, what did I say?

我是否返回了特殊的none值？是第一部分,这里的意思是我从这个分支,走到这儿最终走到最后，并告诉我这条路没有解决方案，也就是我想要打印的结果,没有符合的结果，否则我会把它们输出来？

麻省理工公开课 - 计算机科学及编程导论课程节选