effort一般用在“努力去做”,如“make a good effort 作很大努力”
efforts一般更强调“努力”本身,如“ 这都是他们做出的努力”
I've no use for people who don't make an effort.
我厌恶那些不努力的人。
You should put more effort into your work.
你应该更加努力地工作。
s this all the payment I get for my efforts?
这就是对我辛劳的全部报偿吗？
The team's success was largely due to her efforts.
这个队的成功在很大程度上是她努力的结果。
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