| 词汇 | strenuous |
| 词根词缀 | 词源： "characterized by great effort," 1599, from L. strenuus "active, vigorous, keen." Probably cognate with Gk. strenes, strenos "keen, strong," strenos "arrogance, eager desire," O.E. stierne "hard, severe, keen" (see stern (adj.)). Mocked by Ben Jonson as a pedantic neologism in "Poetaster" (1601). Sense of "requiring much energy" is first recorded 1671. 词根记忆： a. 费力的,艰辛的;奋发的,努力的He undertook a strenuous task.他接手一项艰巨的任务. |
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