They only come in when a friend drops dead on the golf course and they think, "Geez, if it could happen to him, …".

只有当朋友在高尔夫球场猝死时，他们才会来看医生，才会想到：“哎呀，如果这样的事能发生在自己身上，……”

youdao

For hundreds of thousands of Cascadia residents, "The Big One" isn't a question of if, only when.

对于卡斯卡迪亚成千上万的居民来说，“大地震”不是是否会发生的问题，而是何时发生的问题。

youdao

If you zipped the files first, they did not become read-only when written to the CD.

如果你先压缩了这些文件，写入光盘时它们就不变成只读文件。

《柯林斯英汉双解大词典》

If it's there, I'm done, if not, I keep walking down, and I only stop when I get to a place where the element I'm looking for is smaller than the value in the list., in which case I know the rest of this is too big and I can stop.

并且保持遍历,我只在当当前位置的数组元素,大于目标数时停止,这意味着剩下的元素都比目标元素大，但是其他的情况,我还是要遍历完整个数组。

麻省理工公开课 - 计算机科学及编程导论课程节选

We imagine instead of living 80 years,living 90 or 95 or more We imagine a longer life But what is it that happens when I say ? if only I'd been born earlier?

我们想象不仅活80，90或95岁,我们想象能活更长时间,但如果我想象早点出生,会发生什么情况？

耶鲁公开课 - 死亡课程节选

What if the high-tech stuff makes for a great car--only if and when it works?

FORBES: Magazine Article

Challenged on this, republicans say that another ceasefire will be possible only if and when they are convinced that a British government will behave differently towards them.

ECONOMIST: Sinn Fein

Thus, rather than placing a heavy regulatory burden on firms and banks at all times, we need to think of actions we would like regulators to take only if and when market forces begin to weaken, like more stringent disclosure to the public.

FORBES: We Need Smarter Regulation, Not More