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...
我们唯一能够联络到的电工离这里有好几英里远。The only electrician we could get hold of was miles away.我们要请电工修理熨斗.We need an electrician to mend the iron.这些女电工真能干.These women electricians really know their job....
污水中的营养物确实会加快港口的海藻生长。Sewage nutrients do increase algal growth in the harbour.戴维·克莱门特上尉和150名突击队员今天早上对港口展开突袭。Captain David Clement and 150 commandos stormed the port this morning.我挥手告别，然后走下港口石阶。I waved goodbye and went dow...