您要查找的是不是：
- 号roar
- 五号the fifth
- 南希和我为“挑战者号”航天飞机的悲剧感到至为痛心。Nancy and I are pained to the core by the tragedy of the shuttle Challenger.
- 挑战者号科学考察Challenger Expeditio
- 帐号account number
- 环球航运挑战者号Glomar Challenger
- 单号odd numbers
- 一号first day of the month
- 挑战者challenger
- 六号6th day of the month
- 三号thirds
- 挑战者号航天飞机Challenger space shuttle
- 序列号serial-number
- 二号2nd day of the month
- 学号student number
- 小号horn
- 区号district number
- 引号quotation marks
- 分号semicolon
- 问号question mark
