This is a hard job.; The task is arduous.
这个任务很吃重。
The task is arduous; besides, there's not much time.
任务艰巨，同时时间又很紧迫。
Although the task is arduous, it can still be finished on time.
任务虽然很艰巨，但还是可以按时完成。
It is the arduous task for current education to train talents with competitive ability.
如何培养具有竞争能力的人才是当前教育的艰巨任务。
It is the arduous task for current education to train talents with competitive ability.
如何培养具有竞争能力的人才是当前教育的艰巨任务。
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