You use spare to describe something that is the same as things that you are already using, but that you do not need yet and are keeping ready in case another one is needed.
If possible keep a spare pair of glasses accessible in case your main pair is broken or lost.
如有可能留一副备用眼镜以防你常用的那副打碎或丢失。
He could have taken a spare key.
他原本可以带上一把备用钥匙的。
You use spare to describe something that is not being used by anyone, and is therefore available for someone to use.
They don't have a lot of spare cash.
他们没有多少闲钱。
The spare bedroom is on the second floor.
闲置的卧室在2楼。
spares
A spare is something that is the same as things that you are already using, but that you do not need yet and are keeping ready in case another one is needed.
Give me the boot key and I'll get the spare.
给我行李箱钥匙,我去配一把备用的。
spare a thought for
If you spare a thought for an unfortunate person, you make an effort to think sympathetically about them and their bad luck.
Spare a thought for the nation's shopkeepers – consumer sales slid again in May.
可怜一下这个国家的店老板吧--5月份消费品的销售量又下滑了。
spares , sparing , spared
If you have something such as time, money, or space to spare, you have some extra time, money, or space that you have not used or which you do not need.
You got here with ninety seconds to spare.
你们到达这里时还剩90秒钟的时间。
If you spare time or another resource for a particular purpose, you make it available for that purpose.
She said that she could only spare 35 minutes for our meeting.
她说她只能抽出35分钟参加我们的会议。
If a person or a place is spared, they are not harmed, even though other people or places have been.
We have lost everything, but thank God, our lives have been spared.
我们失去了一切,但谢天谢地,我们保住了性命。
If you spare someone an unpleasant experience, you prevent them from suffering it.
I wanted to spare Frances the embarrassment of discussing this subject.
讨论这个话题太尴尬,我不想让弗朗西斯难堪。
Prisoners are spared the indignity of wearing uniforms.
囚犯们不必忍受身穿统一服装的侮辱。