意味
- (of a person, population or material) to age
- (of knowledge) to become outdated
関連語
HSK 7頻度 14,161部首 一その他
to be a little bit careless; to have a moment of inattentiveness
HSK 7頻度 21,385部首 一繁体字 一絲不苟動詞
not one thread loose (idiom); strictly according to the rules
meticulous
not one hair out of place