No, we call that work positive work. All right, so that means we need to put a negative sign right here, by convention.

历史上有过不同的习惯，这里我们规定,如果环境对系统做功。

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Well it's the law and if you got in an accident, it would be very dangerous.

由于法律已经规定了，而且如果你们遇上事故的话确实会很危险。

Make sure 课堂 - SpeakingMax英语口语达人

It turns out that if you make them forfeit their cash value on canceling, then they won't cancel.

但是如果你规定保单的现金价值,会随保单的取消而消失,他们就不会这么干了

耶鲁公开课 - 金融市场课程节选

But if you're a freedman you're-- the other thing I should tell you is that in Roman law if you're manumitted as a slave, you're made free, if you're manumitted in the normal way they did it, that makes you a Roman citizen, if your owner was a Roman citizen.

但如果你是自由人-,有一点我得解释一下,罗马法律规定，如果奴隶被释放了，如果是正常方法被释放的，他就会成为罗马公民，前提是他的主人是罗马公民。

耶鲁公开课 - 新约课程节选

It's a very general condition--"If you obey my laws."

非常笼统的条件-“如果你们遵守我的规定“

耶鲁公开课 - 旧约导论课程节选

So,if you're not willing to accept the no branching rule, if it strikes you as a bizarre thing to throw in to personal identity, maybe you need to reject the personality theory.

所以若你不愿意接受无分支规定，如果你觉得这个人认同感里很奇怪，也许你就需要否决人格理论了。

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In American law, you cannot terminate an employee, for the sole purpose of age.

美国法律规定，如果你仅因为年龄原因辞退员工，

退休很神奇 - SpeakingMax英语口语达人

Well if you have a slave, that slave can't actually sign contracts.

如果你有一个奴隶，但法律规定奴隶不能签署合同。

耶鲁公开课 - 新约课程节选

If you buy a house and you don't pay the mortgage, the contract says you lose the house-- you're out--you've got to pay or it goes back to the mortgage originator.

如果你抵押贷款买房,却没有还房贷,贷款合同规定,你将被取消赎回权,失去房子,所以你必须偿还贷款,否则你的原始贷款人就会收回房子

耶鲁公开课 - 金融市场课程节选