number nine

例句：

1. 1.The team needs to find a way to number nine.
   球队需要找到一种方法来使用第九人。
2. 2. She counted the number nines in her list.
   她在清单上数了第九个。
3. 3. He placed the number nine on the board.
   他把第九个放在黑板上。