It was not easy to get close enough to them to shoot.

VOA: special.2009.02.15

Now they get close enough together that they start to sense that they are becoming part of one system.

现在他们足够接近了,它们开始作用了,他们开始成为体系的一部分。

麻省理工公开课 - 固态化学导论课程节选

Now, what if they get close enough together to start forming one system.

现在组成为一个整体,会发生什么。

麻省理工公开课 - 固态化学导论课程节选

It's always upward sloping, but it may, after awhile, you get close to satiation where you've got enough.

斜率永远是正的,但是也有可能,你拿的钱够多,效用将不再上升

耶鲁公开课 - 金融市场课程节选