左的英文单词是什么意思

　　It's a long time since they left.

　　他们已经离开很久了。

　　Come on, it's time we left.

　　快点，我们该走了。

　　When I left they were all still hard at it.

　　我离开的时候他们都还在努力工作。

　　It's not for me to say why he left.

　　不适宜由我说出他离开的原因。

　　The university is on the left bank of the river.

　　大学在河的左岸。