我们所用的地表水几乎全由淡水湖和河流供给.Fresh - water lakes and streams furnish nearly all of our surface water supplies.几千年前, 黑海还是个淡水湖.Millennia ago, the Black Sea was a freshwater lake.(?风)于下午三时在船湾淡水湖登陆.It made landfall at Plover Cove re...
The deposits spread for 100 kilometers across four counties.这些矿藏绵延一百公里,跨越四个县.The Jinggang Mountains stand where the boundaries of four counties meet.井冈山位于四县之交.The mountain lies between two counties.这座山介于两县之间....
The Koran recommends fasting as a penance before pilgrimages.《古兰经》劝告人们在朝圣前斋戒，以作为一种补赎。A set period of fasting is supposed to bring us closer to godliness.据说定期斋戒会让我们更虔诚。The boy lay on his bed, pale and thin from fasting.那孩...
化学家用电解法把水还原为氢.The chemist reduced water by electrolysis.经氧化 ― 还原反应, 铜渗入铁中.By oxidation - reduction reaction, copper is cemented into the iron.在需氧体系中, 氧是末端电子接受体并且被还原.In aerobic systems, oxygen is the terminal electron acc...