The Air Commodore briefed the bomber crew on their dangerous mission.
空军准将向轰炸机机组下达执行危险任务的各项指示。
Though they think it takes no more than three days to fulfill the mission, I believe it takes not less than six days.
虽然他们认为完成这任务只需三天,但我却认为至少需要六天。
The mission of a university is teaching and research.
大学的任务是教学和科研。