Apochromatism
复消色差
🗣️ 情景例句
What is your career objective?
你的事业目标是什么？
It's a waste of time.
这是浪费时间。
Oh, dear! said Miss Yang. Are you sure you've lost it?
“哎呀！”杨小姐说，“你肯定你弄丢了？”