星星星kooo
发射的英文launch。
例句：
1、两国曾签订了联合发射人造卫星的协议。
The two countries signed an agreement to jointly launch satellites.
2、该卫星自从两年前发射以来一直没起作用。
The satellite had been inactive since its launch two years ago.
3、美国国家航空航天局计划发射一颗卫星上天，对宇宙射线进行研究。
NASA plans to launch a satellite to study cosmic rays.
4、原定的发射在点火起飞前4分钟被取消。
The original planned launch was called off four minutes before blast-off.
5、美国航天飞机的发射已于今天晚些时候开始进入倒计时。
The countdown has begun for the launch later today of the American space shuttle.
