at half cock

例句：

1. 1. He was at half cock when he heard the news.
   他听到这个消息时精神紧张。
2. 2. The team is on half cock to prepare for the game.
   队伍已经做好了比赛的准备。
3. 3. She was at half cock waiting for the bus.
   她正在半醒半睡地等公交车。