提示：点击例句中的单词，就可以看到词义解释

She has not been seen since .

自那以后她便失去踪影。

This is only the second since the revolution .

这是革命以来第二次发生。

But tension has risen since late last month .

但局势自从上月下旬以来开始变得紧张。

Nothing has been quite the same since .

因为没有东西是完全一样的。

Tennis bat to me since you have classes this afternoon .

既然你今天下午没课把网球拍借我用一用。