struer n 21. an object for producing musical sounds乐器 Both the violin and the piano are instruments 小提琴和钢琴都是乐器。 atoo|工具 A hammer is an instrument people often use for repairing things 锤子是人们常用来修理东西的工具instrument instrument n. 1. an object for producing musical sounds 乐器 Both the violin and the piano are instruments. 小提琴和钢琴都是乐器。 2. a tool 工具 A hammer is an instrument people often use for repairing things. 锤子是人们常用来修理东西的工具