基本解释

• [经济学]双焦玻璃

英汉例句

双语例句

• 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。
  blog.sina.com.cn

专业释义

经济学

• 双焦玻璃