And obviously, no bond is the weakest of all is not bonding.

显然，没成键是最弱的。

麻省理工公开课 - 化学原理课程节选

Well, the moral logic of the situation seems to be that, that they would keep on picking off the weakest maybe, one by one, until they were rescued.

这情形的道德逻辑似乎是这样，就是他们一直拣软柿子捏，逐个杀掉，直至获救。

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So what actually turns out the reality is that h e 2 does exist, but it exists as the weakest chemical bond known, and it wasn't, in fact, even found to exist until 1993, so I can assure you this is not a bond that you see very often in nature, and it is a very, very weak bond.

实际上He2键是存在的，但它是目前所知的最弱的键，直到1993年它才被发现，所以我可以向你们保证在,自然界你们不可能经常看到它，它是种非常非常弱得键。

麻省理工公开课 - 化学原理课程节选