Phakometer
(=phakoscope)透镜组聚光能力测定计
🗣️ 情景例句
a portrait of the United States--
一幅美国的剪影--
You cannot sell the cow and sup the milk.
你不可能出售乳牛，同时又要喝牛奶。
You will be very lucky if he lets you go without a ticket.
如果他没给你罚单就放你走了，算你走运。