2、返回原处；复原
He was glad to be home again.
他很高兴又回到家了。
3、增加；多
The cost is about half as much again as it was two years ago.
现在的价格比两年前提高约一半。
4、再说；其次
And again, we must think of the cost.
再说，我们必须考虑成本。
5、（引出相对照的事实或看法）再说，另一方面
We might buy it but then again we might not.
我们可能买，不过也可能不买。
6、请再说一遍
What was the name again?
叫什么名字，再说一遍好不好？