单词glass harmonica
网络: 玻璃琴
He also made the first pair of bifocal glasses and invented a musician instrument called the glass harmonica and a stepladder chair.
他还制造了世界上第一副双光眼镜，发明了一种叫玻璃琴的乐器和活动梯子。
He also made the first pair of bifocal glasses and invented a musical instrument called the glass harmonica and the stepladder chair.
他还制造了第一双双焦眼镜，发明了玻璃琴和活梯椅乐器。