汞的化学元素符号是什么？What's the chemical symbol for mercury?有些窃贼用汞水腐蚀他们的镣铐.Some thieves have eaten off their irons with mercury water.添加的甲基汞的回收率据报到达90%左右.The recovery of added methylmercury was reported to be approximately 9...
The quilt has pretty, scalloped edges and intricate quilting.这条被子有漂亮的荷叶饰边，而且绗缝活做得也很精致。Mary saved up pieces of cloth to make a quilt.玛丽存了几块布留作棉被用.The design on this quilt cover is quite elegant.这被面的花儿很大方....