Optical purity
[化] 光学纯度
🧩 词语组成解析
🗣️ 情景例句
About three weeks. We'll have enough time for our talks.
大约三个礼拜，我们有足够的时间交谈了。
I've got a slight pain in my knee.
我的膝盖有点痛。
I was born in a town near London. But we live in London now.
我出生于牛津附近的一个小镇。不过我们现在住在伦敦。