Perchromate
n. [化]过铬酸盐
🗣️ 情景例句
By this time next week we shall be in London.
下星期的这个时间我们将在伦敦。
Just deposit your money with us; we'll take good care of it.
请存在本银行，我们会负责保管的。
Thus one simple fact, a change in the number of bison, had an effect on the whole wildlife chain of the plains.
因此，出现了这样一个简单的事实--野牛数目换的变化对平原的整个野生生物链都产生了影响。