Try to go out for a walk at lunchtime, if the weather permits.

如果天气条件允许，午饭时尽量出去散散步。

《柯林斯英汉双解大词典》

He says the opposition will radicalize its demands if these conditions aren't met.

他说如果这些条件得不到满足，反对派的要求就会变得更加激进。

《柯林斯英汉双解大词典》

"I think it would civilize people a bit more if they had decent conditions."—"I think you've hit the nail on the head."

“我认为如果人们有好的条件，就会使其更有教养一点。”—“我想你说到点子上了。”

《柯林斯英汉双解大词典》

If you start segregating the gases, there are fewer possible configurations that because you're forcing a particular set of circumstances.

如果你开始分离这些气体，整个系统所具有的可能的状态就会变少,你强加了一个特定的条件。

麻省理工公开课 - 热力学与动力学课程节选

So if you wanna do something conditionally, you generally needs to ask the question, is the following true or false.

假如想在一定条件下做一件事情，你需要判断下这个条件，来看看条件是真还是假。

哈佛公开课 - 计算机科学课程节选

Whereas under these conditions, these quantities, if you look at free energy change, for example at constant temperature and pressure, H you can still calculate H.

但是，在这些条件下，这些物理量，如果我们考察自由能的变化,例如在恒定的温度和压强下，我们仍然可以计算。

麻省理工公开课 - 热力学与动力学课程节选