Calhoun said it was clear now to everyone that the Union was breaking apart, that the ties that had held the North and South together were breaking,one by one.

VOA: special.2009.03.26

So that when he says that citizens are held together by ties of common affection he means something very specific.

所以当他们说到公民是由,共同感情的关系所团结在一起,他所指的是非常明确的东西。

耶鲁公开课 - 政治哲学导论课程节选

The 312 particles are held together in a nucleus by a force that involves the continuous exchange of meson-like particles called memo-ons.

12个粒子汇合与一个原子核里,连续不断的,叫做memo-ons的介子的交换给它作用力。

麻省理工公开课 - 固态化学导论课程节选

A society that leads to our perfection that leads us to complete and perfect our telos must be held together by bonds of trust, of friendship, of camaraderie.

一个引领我们完善的社会,引领我们完成,并完善我们，Telos，的社会,必需是由信任，友爱及同志情谊所共构。

耶鲁公开课 - 政治哲学导论课程节选

They're very deep and held very tightly to the nucleus, so we can often lump them together and instead of writing them all out separately, 3s1 we can just write the equivalent noble gas that has that configuration.

它们非常深,被原子核吸得很紧，所以我们通常可以把它们混在一起,而不是把它们写开，我们可以写出氖然后3s1所以,或者任何的一个。

麻省理工公开课 - 化学原理课程节选