strenuous
/ˈstrenjʊəs/adjective
- requiring or using great exertion费劲的, 费力的：
the government made strenuous efforts to upgrade the quality of the teaching profession.
政府下大力提高教师队伍的素质。
派生词
strenuously
adverbstrenuousness
noun词源
early 17th cent.: from Latin strenuus 'brisk' + -OUS.