如果你只知道作者，那就查作者目录。

If you only know the author, just look it up in the author catalog.

youdao

这是一个好建议，但是如果你只知道一个篮子，如何能把这一建议付诸实施呢？

It's good advice, but how can you apply it if you know only one basket?

youdao

摘要： 一提到新西兰，如果你只知道长相思，那就真是太落伍了，赶紧来看看自己还缺了什么常识吧！

ABSTRACT: When it comes to New Zealand, it is so funny that if you only know Sauvignon Blanc. So come and find what you need for a new look about New Zealand.

youdao

And we haven't talked about reactions at all yet, so you don't need to worry about the specifics of that exactly, but just that if you have this negative change in energy, you have a more stable product than you do reactant.

当然我们还没有开始讨论反应，所以你不用担心它的细节是怎么样的，你只需要知道，如果能量的变化是负值，那么你将得到一个比反应物更稳定的生成物。

麻省理工公开课 - 化学原理课程节选

If all you know is the particle is falling under the affect of gravity, that's not enough to say where the particle is, right?

如果你只知道,质点受重力作用下落,那并不足以表明物体的位移,对吧

耶鲁公开课 - 基础物理课程节选

If only you'd known you were only going to have 20 more years instead of 50 more years, you would've picked a different kind of life for yourself.

如果你知道你只剩下,20年而不是50年，你就会为自己选择另一种生活。

耶鲁公开课 - 死亡课程节选