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月六級真題（第三套）閱讀 Section B
柯林斯高階英漢雙解學習詞典釋義
N-COUNT
(電視、廣播節目的)發射機
A transmitter is a piece of equipment that is used for broadcasting television or radio programmes.