Apochromatism
复消色差
🗣️ 情景例句
He was very kind.
对人和蔼。
Hope for the best, but prepare for the worst.
作最好的希望，作最坏的打算。
that I was a new boy in a huge school, and I would have been very pleased to be regarded as something so interesting as a problem.
我是一所大学里的一名新生，如果我当时真的被看成像一个问题那样有趣，我会感到很得意的。