Spectrosil
最纯的石英, 光谱纯石英
🗣️ 情景例句
Well, I only like to do some jogging in the fresh morning air.
是的，我仅喜欢在早晨清新的空气里慢跑。
He that will lie will steal.
说谎者必行窃。
I was astonished.
我很吃惊。