Perbromate
n. [化]过溴酸盐
🗣️ 情景例句
Who isn't?
有谁不紧呢？
Opportunity only knocks once.
机不可失，时不再来。
Just then, the gaoler appeared with the precious letter in his bands.
这时狱卒上场，手里拿着那封珍贵的信。