keyboard instrument是什么意思？

An early keyboard instrument with a soft sound produced by small wedges striking horizontal strings.当击键盘时移动小锤敲击琴弦的杠杆系统....

keyboard instrument的音标：keyboard instrument的英式发音音标为：['ki:bɔ:d 'instrumənt]keyboard instrument的美式发音音标为：['kiˌbɔrd 'ɪnstrəmənt]...