Optical purity
[化] 光学纯度
🧩 词语组成解析
🗣️ 情景例句
Yes. I wonder if you can send up some of boiling water for me.
是的，你可以送点开水上来吗？
I don't think it's four o'clock yet.
我认为现在还不到四点。
It has to be tall because it is like a giant block and tackle,
井架必须很高，因为它像一个巨型滑轮组。