wanderer

名词 wanderer:

1. someone who leads a wandering unsettled life
   同义词：roamer, rover, bird of passage
2. a computer program that prowls the internet looking for publicly accessible resources that can be added to a database; the database can then be searched with a search engine
   同义词：spider

1. A long, long time ago, cowboys were wanderers, driving their herd from place to place, looking for fresh grass and water.
   在很久很久以前，牧童都是游牧者，赶着他们的牧群到处寻找青草和水源。
2. I met a wanderer in the street yesterday.
   我昨天在街上遇见了一个流浪者。