1N-COUNT (作为爱好去火车站)搜集机车号码的人 A trainspotter is someone who is very interested in trains and spends time going to stations and recording the numbers of the trains that they see. (作为爱好去火车站)搜集机车号码的人 [British]
2N-COUNT (熟知某一领域全部细节的古怪或乏味的)迷恋狂 If you describe someone as a trainspotter, you think they are odd or boring because they are interested in knowing everything about a particular subject, even very small, unimportant details. (熟知某一领域全部细节的古怪或乏味的)迷恋狂 [British, disapproval]
He's a rather over-serious disco trainspotter with a record collection instead of a brain.