发射信号

例句：

1. 1. The satellite was launched into space on a successful mission.
   卫星在一次成功的任务中被发射入太空。
2. 2. The missile was sent to target the enemy's base.
   导弹被发送到敌方基地。
3. 3. The scientist emitted a radio signal to communicate with his team.
   科学家发射了一个无线电信号来与他的团队进行通信。