glass harmonica
noun
- a musical instrument in which the sound is made by a row of rotating, concentric glass bowls, kept moist and pressed with the fingers or with keys. It was invented in 1761 by Benjamin Franklin and was popular until about 1830.玻璃碗琴（一种由一排旋转的同轴心的玻璃碗组成的乐器, 要保持碗的潮湿并用手指或用键按压以发音; 该琴1761年由本杰明·弗兰克林发明, 一直流行到约1830年）。