COMB in N-COUNT
（与名词连用构成新的名词）表示“…观察者”，“…注视者”
-watcher combines with nouns to form other nouns that refer to people who are interested in a group of animals or people, and who study them closely.
例句
The bird-watchers crept about in the bushes...
观鸟者在灌木丛中蹑手蹑脚地走来走去。
Royal-watcher Mary Hayes said: 'It looks like it is going to be an unhappy time for the Queen.'
皇室观察员玛丽·海斯说：“看来女王接下来的日子不太好过。”