| 单词 | 必须重发 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔let〕Sports An invalid stroke in tennis and other net games that must be repeated.【体育运动】 触网重发：网球或其他网类球中必须重发的无效发球美国传统〔net〕If the ball touches the net during a serve in a game of tennis, you have to serve again.在网球比赛中如果发球触网，必须重发。剑桥高阶 |
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