bifocal glass
常见例句
- 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。
blog.sina.com.cn - He also made the first pair of bifocal glassed and invented a musical instrument called the glass harmonica and the stepladder chair.
他还制作出了世界上第一幅双光眼镜，发明了玻璃碗琴和活梯。
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