科学作为一种职业可能使人振奋，但在某种意义上说，也可能意味着艰巨的 劳动。
Science as an occupation can be exciting but, in a sense, it can be hard work.
解决劳动就业问题是一个长期、艰巨而复杂的任务。
Resolving labor employment question is a long-term, arduous and complex duty.
解决劳动就业问题是一个长期、艰巨而复杂的任务。
Resolving labor employment question is a long-term, arduous and complex duty.
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