sedulous
sedulous[ˈsɛdjʊləs]adjective- (of a person or action) showing dedication and diligence
(人,行为)坚忍不拔的,勤勉的,一心一意的
he watched himself with the most sedulous care.
他照顾自己无微不至。
派生sedulity[sɪˈdjuːlɪti]nounsedulouslyadverbsedulousnessnoun语源- mid 16th cent.: from Latin sedulus 'zealous' + -ous
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