also happy go lucky, 1670s, "haphazard, in any way one pleases; every man for himself." Earlier as happy-be-lucky (1630s). The adjective, of persons, recorded from 1835, "careless," hence "carefree."
权威例句
1. She has now changed into a happy, self-confident woman.
如今她已经变成一个快乐、自信的女人。
2. He was so happy communing with the dolphin in Dingle Bay.
他在丁格尔湾与海豚交流的时候特别开心。
3. Like the best stories, this one may yet have a happy end.
就像最精彩的故事那样,这个故事也许仍会有个美好的结局。
4. Some foreign governments appear happy to gloss over continued human rights abuses.
一些外国政府似乎很乐于掩盖不断出现的侵犯人权现象。
5. I wasn't too happy with what I'd written so far.