-opsia
[医]〔构词成分〕意为视力的状况或缺陷
🗣️ 情景例句
I can never get ahead at my job.
我总是不能出人头地。
Yes. At 3 pm.
是的，约的是下午3点。
Imagine a pen attached to the weight in such a way that its point rests upon a piece of paper on the floor.
假定把一支笔拴在重物上，笔尖落在地板上的一张纸上，