Otf
光学传递函数
🗣️ 情景例句
What's wrong?
什么病
An ass endures his burden,but not more than his burden.
驴子能负重，过重也难负。
He's only forty-one years old, and he has already been to nearly every country in the world.
他只有41岁，但他却过世界上几乎每一个国家。