bifocal spectacle

例句：

1. 1.She needed a pair of bifocal glasses to read the small print on her prescription.
   她需要一副双焦点眼镜来阅读她的处方上的小字。
2. 2.The doctor prescribed him bifocal glasses to help him see better at work.
   医生给他配了一副双焦点眼镜，以便他在工作时看得更清楚。
3. 3. He was surprised when he saw his old teacher wearing bifocal glasses in the classroom.
   当他看到老师在教室里戴着双焦点眼镜时，他感到很惊讶。