Amateur sports or activities are done by people as a hobby and not as a job.
professional athletes and amateur runners.
专业运动员和业余赛跑运动员。
amateurs
An amateur is someone who does something as a hobby and not as a job.
Jerry is an amateur who dances because he feels like it.
杰瑞是一位业余舞蹈爱好者,他跳舞因为他喜欢跳。