Apochromatism
复消色差
🗣️ 情景例句
Does this car have good fuel economy?
这种车省油吗？
What's goes on here?
什么事？
Acting on a sudden impulse, I collected several dozen, put them in a paper bag, and took them to Robert.
我一时冲动，逮了几十只，装进一只纸袋里，带着去找罗伯特。