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...
Selectmen are required by law to perambulate the bounds every five years.法律规定行政委员每五年应巡查一遍边界.Classics spot perambulate considers as the homicide that invades money sex together the case.经现场勘查认为是一起侵财性的杀人案件....
INsert boot diskette in drive A : Press spacebar when ready.请你把驱动盘插入软驱,准备好了之后,按空格键继续.To prepare for use, e . g, to initialize a diskette.准备使用, 例如初始化一张软盘.Target diskette write protected. Correct, and then strike any key.目...