1. The air force and the navy retain their prohibition of women on air combat missions. 空军和海军都保留了对女性空中作战任务的禁止。
2. It's just another one of this year's routine missions. 这只是今年的例行任务之一。
3. Astronauts on shorter shuttle missions often work very long days. 执行短期任务的宇航员通常每天要工作很长时间。
4. The programme was set to follow the U.S. space agency's shuttle missions, which are due to end in September. 该项目原本设定在美国宇航局的航天飞机任务后,后者将于9月结束。
5. Coleman in his early work held athletics in contempt, arguing that they crowded out schools' academic missions. 科尔曼在他早期的著作中对体育运动嗤之以鼻,他认为体育运动排挤了学校的学术使命。