We tried to grow some copper sulphate crystals with our children.我们想跟孩子们一起制作硫酸铜晶体。Adding sulphate to the solution will give a precipitate.将硫酸盐加入该溶液会产生沉淀.More ammonium sulphate solution is being recovered in the process o...
"I shall go, leave him." Laura Stebbing stopped, her eyes glistening.“我要走，离开他。”劳拉·斯特宾停了下来，眼里闪烁着光芒。A thin, glistening thread of moisture ran along the rough concrete sill.在粗糙不平的水泥窗台上有一条细细的发光水印。Darcy's face was white ...
To soften a formal look, Caroline recommends ethnic blouses.为了看上去不过于正式，卡罗琳建议穿有民族色彩的上衣。Most coats, jackets or blouses button at the front.大多数上衣 、 夹克或衬衫都在前面扣扣.The girls are wearing white blouses and bright - coloured skirt...