发射性的

例句：

1. 1. The satellite was designed to be emitting signals from space.
   这颗卫星被设计成能从太空发射信号。
2. 2. The device is emitting a loud noise.
   这个装置正在发出响亮的声音。
3. 3. The scientist discovered that the substance was emitting radiation.
   科学家发现这种物质在发射辐射。