Nowadays, these glasses are known as bifocals.
如今，这被称为双光眼镜。
Take care when stepping on and off the escalator; take extra care if you wear bifocals.
在上下扶梯的时候一定要留神，尤其是当你还戴着眼镜的时候。
I’m thankful that women my age will need bifocals to see the chin hairs that they missed plucking.
我对象我这般年纪的妇女需要双光眼镜才能看清下巴上漏拔的毛发而表示感谢。
Occasionally, children who have crossed eyes may need to have bifocals to help control the crossing.
偶尔有内斜视的孩子会需要双光镜来控制内斜。
It's scary when you have to look through the bottom part of your bifocals to shoot layups and the top part on jump shots.
“这真让人害怕，当你上篮时得从远近视两用眼镜的底部往外看，而跳投时又得换成从顶部看过去”。
Objective To observe the effects of bifocals on amblyopia in children cataract after implantation of undercorrected IOL (intraocular lens).
目的观察儿童白内障欠矫的人工晶状体植入术后给予配戴双光镜的弱视治疗效果。
A founding father, the inventor of bifocals and the lightning rod and elementary-school dropout-it sounds crazy, but this is an accurate description of Franklin.
富兰克林是美国的国父，远近双对焦眼镜和避雷针的发明者，小学辍学生——虽然听起来有些不可思议，但这正是富兰克林的准确生平介绍。
Famous for his electrical experiments, this founding father invented the iron furnace (a. K. A. The franklin stove), the lightning rod, bifocals and a carriage odometer, among other things.
他的电流实验非常有名，他发明了铁熔炉，也叫弗兰克林熔炉，以及避雷针、双光眼镜、车架里程表和其他器件。
Famous for his electrical experiments, this founding father invented the iron furnace (a. K. A. The franklin stove), the lightning rod, bifocals and a carriage odometer, among other things.
他的电流实验非常有名，他发明了铁熔炉，也叫弗兰克林熔炉，以及避雷针、双光眼镜、车架里程表和其他器件。
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