但实际上，我们今天所知道的乐器是在20世纪20年代人们出于实用目的造出来、之后持续发展演变而成的。

But really the instrument we know today was the result of a continuing development that started for our practical purposes in the 1920s.

youdao

但实际上，我们今天所知道的乐器是在20世纪20年代人们出于实用目的造出来、之后持续发展演变而成的。

But really the instrument we know today was the result of a continuing development that started for our practical purposes in the 1920s.

youdao