没有办法看到哪些实例是活动的，以及哪些实例正在等待。

There's no way to see which instances are active and which are waiting.

youdao

你没办法看到细菌。

You can't see germs.

youdao

在网上，你没有办法看到他们发布内容时的面部表情或身体语言。

Online, there's no way to see facial expressions or read body language that provide context.

youdao

And so by listening and encouraging, I help students see that there's a way to resolve any challenges that they might face.

如此，通过倾听和鼓励，我让学生们看到他们有办法,去应对面临的一切挑战。

普林斯顿公开课 - 人性课程节选

So if you're trying to make a more complicated organic molecule carbon-carbon bonds are one of the most difficult things to make in organic chemistry, and it turns out that c n minus is a very reactive molecule, so it's a good way, even though we'll go over some drawbacks in a second, it is a good way to make carbon-carbon bonds.

如果你要合成一个更复杂的有机分子,碳碳键是有机化学中,最难制造的键之一，而实际上氰离子是一种具有很高活性的分子，用它是一个好办法，尽管我们一会儿将看到它的一些缺点，但它的确是一个制造碳碳键的好方法。

麻省理工公开课 - 化学原理课程节选