shoulder strap
noun
1- a narrow strip of material going over the shoulder from front to back of a garment（吊起衣服的）背带。
1.1
- a long strap attached to a bag for carrying it over the shoulder（包的）肩带。
1.2
- a strip of cloth from shoulder to collar on a military uniform bearing a symbol of rank（表示军阶等的）肩章。
1.3
- a similar strip on a raincoat（雨衣的）肩带。