氯用来给水消毒。Chlorine is used to disinfect water.给水加热时, 它会变成蒸气.When heated, water changes into vapour.可以毫不夸张地说,有成千上万座混凝土水坝正在供灌溉,给水 、 防洪 、 发电之用.Literally thousands of concrete dams are providing water supply shortage, irrigati...
The key issue was whether the four defendants acted dishonestly.关键问题是4名被告是否存在欺诈行为。She avoided the issue by ordering a turkey sandwich.她点了份火鸡三明治，以此来避开这个重要问题。He said the issue was not a major irritant.他说那个问题不是什么大问题。...
In human reproduction, one female egg is usually fertilized by one sperm.在人体生殖过程中, 一个精子使一个卵子受精。Two days later, they implanted the fertilized eggs back inside me.两天以后,他们把受精卵重新植入了我的体内。The fertilized eggs are taken from the...