walkman

n.(trademark) a pocket-sized stereo system with light weight earphones

1. He put on his Walkman and listened to his favorite songs while walking to school.
   他戴上随身听，一边走路去学校一边听自己最喜欢的歌曲。
2. The Walkman revolutionized the way people listened to music on the go.
   随身听彻底改变了人们随时随地听音乐的方式。