留作的英文：
give over to

参考例句：

Two infantry divisions were held in reserve.
两个步兵师留作后备军。

Lay up a field for pasture
把一块地留作牧场

prevented from decaying or spoiling and prepared for future use.
防止腐败或者变坏，留作将来使用。

My friend gave me his picture as a memento before going away.
我的朋友在离别前给我一张照片留作纪念品。

This room was designed for the children/designed as a children's playroom.
这个房间预定留给孩子们用;留作孩子们的游戏室。

My friend gave me his picture as a keepsake before going away
我的朋友在离别前给我一张照片留作纪念。

Land left in bare fallow to be sown with winter crops sustained losses that far exceeded the rate of new soil formation
留作播种冬季作物的休耕地所经受的土壤流失远远超过土壤生成的速率。

give是什么意思：
n. 弹性，伸展性
v. 给；授予；赠送；捐赠；供给；告诉，提供；产生；让步；塌下；举办；支付

Will you give it a shot?
你想做尝试吗？

He gives twice who gives quickly

The purpose is not to give an exhaustive treatment.
其目的并不是给出全面彻底的处理。

You must give way to betters.
你必须让长者先行。

Give your real name.
说出你的真实姓名。

over是什么意思：
adv. （倒）下；从一边到另一边；越过；再；结束
prep. 在…之上；越过；在…的另一边（对面）；由于；从一边到另一边
adj. 过去的；结束的；外面的；上面的
v. 越过

chew over; think over
考虑;详细讨论

I have failed over and over and over again in my life.
我一生中失败了一次又一次。

"Over shoes, over Boots"
一不做,二不休

The police replayed footage of the accident over and over again.
警察一遍又一遍地重放事故的片段。

Have you run into the same type of boss over and over again?
你不断地跳槽，换了东家换西家，却发现你所面对的老板都一个样。