-spotter

剑桥词典

used to refer to a person whose job or interest is to notice people or things of the type mentioned
（以物色某類人或搜集某類東西爲職業或興趣的人）…探，探子
a talent-spotter 星探
UK a train-spotter 因爲興趣而搜集鉄路機車號碼的人 返回 -spotter