bifocal glass

基本解释

• [經濟學]雙焦玻璃

英汉例句

雙語例句

• He also made the first pair of bifocal glasses and invented a musician instrument called the glass harmonica and a stepladder chair.
  他還制造了世界上第一副雙光眼鏡，發明了一種叫玻璃琴的樂器和活動梯子。
  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.
  他還制作出了世界上第一幅雙光眼鏡，發明了玻璃碗琴和活梯。
  blog.sina.com.cn

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专业释义

經濟學

• 雙焦玻璃