cheerfully irresponsible; "carefree with his money"; "freewheeling urban youths"; "had a harum-scarum youth" 同义词：carefree, devil-may-care, freewheeling, harum-scarum, slaphappy,
例句与用法
1.
He had at once the impression of organization, very different from the old happy-go-lucky ways under his leadership . 他马上感到一切都组织得有条不紊，跟过去他当头儿那会儿松松垮垮的，劲儿可不大一样。
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