Both countries were isolated regionally and at that time shared common foes, Syria in particular.

VOA: standard.2009.10.27

A covalent bond is any time we have a pair of electrons that is shared between two different atoms.

所谓共价键就是我们有两个原子,共用一对电子。

麻省理工公开课 - 化学原理课程节选

But at the same time, as Darwin well knew, emotions have universal roots that are shared across all humans and across many animals.

但同时，正如达尔文所说，情感在全球是相通的,被所有的人类和动物共享。

耶鲁公开课 - 心理学导论课程节选

Remember, every time we have two electrons that are being shared, that's a single bond.

还记得，每次我们有两个电子被共用，我们就有了一个单键。

麻省理工公开课 - 化学原理课程节选