operoseadj.
英 'ɒpərəʊs | 美
中文adj. 费力的；勤勉的；吃力的；困难的；辛勤的
词根词源
operose (adj.)"involving much labor," 1670s, from Latin operosus "taking great pains, laborious, active, industrious," from opus (genitive operis) "work" (see opus). Related: Operosity.
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