I'd be on edge, too, If my marriage were having problems.

如果我的婚姻出了问题，我也会焦躁不安的。

Something you say could cause a meltdown - everyone's nerves will be on edge.

你说的东西可能会导致崩溃-每个人的神经会在边缘。

You always have to be on edge. You always have to take every practice, every game, like it is your last.

你总是紧张。你总是要抓住每一个练习，每一场比赛，就象它是你最后。

It was a wonderful moment in American history, but a tense one for President and Mrs. Bush, who had to be on edge with their sons election hanging fire.

这在美国历史上是个令人愉快的时刻，但老布什总统夫妇却放心不下，毕竟他们的儿子的竞选结果胜负难料。

Content distribution networks (CDNs), which cache static content on the edge of the network, used to be costly.

内容分布式网络(CDN)将静态资产缓存到网络边缘，这在过去是非常昂贵的。