短语词组短語back -strap 後腰耳環back strap joint 貼板接郃back strap width 後肩寬Back strap too high 後拉帶太高;後帶太高back strap length 後肩長beef back strap 牛板筋elastic back strap 彈性背墊條back strap too hellogh 後帶過高Back strap distance 後帶距 返回 back strap