20min是什么意思

　　After a few minutes our eyes got used to the darkness.

　　几分钟后我们的'眼睛就适应了黑暗。

　　The first two classes are followed by a break of ten minutes.

　　上完头两节课，有十分钟的课间休息。

　　I'll be back in a few minutes.

　　我一会儿就回来。

　　I'll give you ten minutes to prepare your answer.

　　我给你十分钟时间准备回答。

　　It was all over in a matter of minutes.

　　几分钟就全部结束了。