光阴的英文：
time

参考例句：

Life is short and time is swift
人生苦短,光阴易逝

To waste time by puttering aimlessly; dawdle.
虚度光阴无目的地磨蹭而浪费时间；虚度（光阴）。

The vagabond began to regret his waste of time.
这个浪荡子开始后悔他虚度了光阴。

It would be easy to look back and rue the wasted moments.
人们总是容易回忆过去，懊悔浪费的光阴。

No one can call Back yesterday
光阴一去不复返

All time is no time when it is past
光阴一去不复返

Time flows.
光阴流逝.

Nothing can compensate for the loss of time.
光阴一去不复还。

Valuable time not to be wasted
宝贵光阴

To fritter away one’s time
徒费光阴

time是什么意思：
n. 时间；（一段）时光；时机；机会；历史时期；时代；次；回；倍
v. 测定…所花时间；调准；调整；测定…所花时间
adj. 时间的；定时的；定期的；分期的

discrimination time
辨别时间辨别时间

It is time to go.
该走了。

They are not in step with the times.
他们跟不上时代的步伐。

This was for the time only.
这只是一时的权宜之计。

What for this time?
这次又是为什么？