Chromatizing
铬酸盐钝化处理
🗣️ 情景例句
Richard, did you go to the aerobics class, really? Richard
你真的上了有氧运动课吗？
As this is a special offer, we hope you won't miss this opportunity.
因这是特殊报价，希望您不要错失良机。
Economy is one powerful motive for camping, since after the initial outlay upon equipment,
图省钱是露营的一个主要动机，因为除了开始时购置或是租借一套露营装备外，