They laboured for the happiness of mankind.
他们为人类的幸福而努力工作。
They laboured through the thick forest and up the steep hill.
他们艰难地穿过茂密的森林，爬上陡峭的山坡。
The old man laboured up the hillside.
老人吃力地登上山腰。
They laboured through the thick forest.
他们艰难地穿行于茂密的森林。
The ship laboured through the heavy seas.
船在波涛汹涌的海上缓慢吃力地航行。
He laboured all day at the mill.
他整天在工场里做工。
他努力研究那个问题。
They have laboured to complete the job.
他们努力完成这一工作。
The men laboured on into the late night.
那些人辛劳到深夜。
He laboured at the problem till midnight.
他研究那个问题直到半夜。
I laboured at the English course for two years.
我苦学了两年英语课程。
All day long I laboured alone in the front room.
我整天独自一人在前屋里劳作。
We laboured hard to finish our job ahead of schedule.
他们努力完成这一工作。
The editor laboured over the manuscript till midnight.
编辑辛辛苦苦地修改手稿直到午夜。
He laboured the point so that the audience lost interest.
他过分详细地解释论点使听众失去兴趣。
The editor laboured over the manuscript till early morning.
编辑修改手稿至天明。
We laboured with them for an hour but could not convince them.
我们煞费苦心地劝了他们一个小时，但是未能说服他们。
I am afraid of you, lest perhaps I have laboured in vain among you.
我真为你们担心，怕我白白地为你们辛苦了。
I am afraid of you, lest perhaps I have laboured in vain among you.
我真为你们担心，怕我白白地为你们辛苦了。
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