half a minute

汉语翻译

例句：

1. The next contestant surprised me. She made139 jumps in half a minute.
   下一个参加比赛的人使我吃惊，她在半分钟之中跳了139下(指跳绳)。
2. I'll be ready in half a minute.
   我马上就准备好。
3. It's exasperating to run for a train and then miss it by half a minute.
   跑著赶火车，却差半分钟没赶上，真气人。