follower
/ˈfɒləʊə(r)/noun
1- a person who supports or maintains awareness of a particular person, cause, or activity追随者, 拥护者, 爱好者：
he is a keen follower of football.
他是个热心的足球爱好者。
1.1
- a person who moves or travels behind someone or something跟在后面的人。