劍橋詞典a period of 30 minutes 半小時，30分鐘 The dollar surged against the yen in the final half hour of trading . 在交易的最后半小時里美元對日元的匯率猛漲。 Half an hour later , she was smiling and chatting as if nothing had happened . 半小時后，她又談笑風生，仿佛什么事都沒發(fā)生過。 She is to host a new half-hour show that will be broadcast every weekday evening . 她將主持一檔新的半小時節(jié)目，在工作日晚間播出。 Trains for Washington depart on the/every half hour (= at 10.30, 11.30, etc.). 開往華盛頓的列車每逢半點發(fā)出一趟。 例句 Once Mrs Kirkpatrick starts talking to you, you're stuck with her for a good half hour .The train doesn't leave for another half hour yet .Then we had to sit through another half hour of tedious questions .The first half hour of the day is usually spent on correspondence , emails and paperwork .I've spent the last half hour trying to get the baby off to sleep . 返回 half hour