Varifocals
变焦眼镜, 渐进眼镜 （镜片由上至下用于看远、近距离的东西）
🗣️ 情景例句
10 percent down and the balance at the time of shipment?
百分之十付现款，余额在装运时付清吗？
How often did I tell you not to say a word?
我告诉你多少次不要讲话?
We owe a lot to the birds and beasts who eat insects but all of them put together kill only a fraction of the number destroyed by spiders.
我们要十分感谢那些吃昆虫的鸟和兽，然而把它们所杀死的昆虫全部加在一起也只相当于蜘蛛所消灭的一小部分。