within their compact bodies these minute satellites are able to house sensors and communications receivers/ transmitters that enable operators to study Earth from space, as well as space around Earth.
2019年6月六级真题（第三套）阅读 Section B
柯林斯高阶英汉双解学习词典释义
N-COUNT
(电视、广播节目的)发射机
A transmitter is a piece of equipment that is used for broadcasting television or radio programmes.