Tachyol
[化] 氟化银
🗣️ 情景例句
May I have a tour of the cockpit, please?
我能参观一下驾驶舱吗？
He that converses not knows nothing.
不和人交谈的人一无所知。
I don't want to imply that every point in this contract is negotiable.
不用我说，该合同中的每一条都要严格执行的，没有讨价还价的余地。