Trichromate
三铬酸盐
🗣️ 情景例句
know that I'm running for office
知道我正在竞选公职，
There's TV coverage of the NBA tournament.
有个NBA联赛的电视报道。
suggested an idea on which he had been working for many years to the British Government and industrial circles.
他向英国政府和工业界提出了他研究多年的一项计划。