节省时间的英文：
gain time

参考例句：

He is economical of his time.
他节省时间。

We saved time by taking a shortcut.
我们走近路以节省时间。

Be economical of time and energy
节省时间和精力

In order to save time, you'd better double back
为节省时间，你最好按原路返回。

I was merely putting forward 'the opinion (that) we should dine out to save time.
我刚才只是主张应该外出就餐，以节省时间。

Time is life and when the idle man kills time, he kills himself.
时间就是生命，懒人消耗时间就是消耗自己的生命。或时间就是生命，节省时间，就是延长生命。

gain是什么意思：
v. 获得；获利；增加；走快；到达
n. 增加；利润；收获

No pains, no gains.
不劳则无获。

This ticket will gain you admission [will gain admission for you].
这张票将使你得以入场。

Its gain is the product of the gains of its constituent branches.
它的增益等于它含有的分支的增益的积。

This was a campaign that gained momentum.
这是一场势头一直增强的运动。

They gained the game with ease.
他们很轻松地赢得了这场比赛。

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？