新概念英语优美短文背诵：The Salinity of Ocean Waters

新概念英语美丽随笔背诵：The Salinity of Ocean WatersThe Salinity of Ocean Waters海水盐度if the salinity of ocean waters is analyzed，it is found to vary only slightly from place to place . never theless，some of these small changes analyzes分析海水的盐分，可以看出地区之间只有一些变化，一些变化是重要的。there are three basic processes that cause a change in oceanic salinity。one of these is the subtraction of water from the ocean by means of ev pora TiO Nconversion of liquid water to water vapor。in this manner the salinity is increated，Since the salts stay behind。if this is carried to the extreme，of course，white crystals of salt would be left behind。引起海洋盐分变化的三个基本过程之一是将液态的水转换成水蒸气，从而减少海洋中的水分。盐剩下来，盐分增加。当然，如果这种方法走极端，还有残留的白色盐晶体。the opposite of evporation is precipitation，such as rain，By which water is added to the ocean。here the ocean is being diluted so that the salinity is decreated .this may occur in areas of high rainfall or I N coastal regions where rivers flow into the ocean .与蒸发不同，降雨等降水进入海洋，海水稀释，盐分降低。这种情况发生在降雨量大的地区或河流流入海岸的地方。thus salinity may be increassed by the subtraction of water by evporation，or decreated by the addition of fresh water by precipitation or run off因此盐度通过蒸发减少水分而增加，或者通过降水或径流增加淡水成分而减少。Normalally，in tropical regions where The sun is very strong，The ocean salinity is some hat higher than it is in other parts of The world wheresimilarily，In coastal regions where rivers dilute the sea，salinity is some hat lower than In other oceanic areas。一般来说，在阳光强烈的热带地区，海水的盐分比世界上其他任何热带地区都不蒸发的地方略高。同样，在河流稀释海水的沿海地区，海水盐分比其他海域略低。athird process by which salinity may be altered is associated with the formation and melting of seaice .when sea water is frozen，The dissolve materials are left behind . in this manner，Seawater directly beneach freshly formed seaice has a hightof course，when this ice melts，It will tend to decrease the salinity of the surrounding water。可以改变盐分的第三个过程与海上冰的形成和熔化有关。海水结冰时，其中还残留着溶解的物质。这样的话，新形成的海水的冰正下方的海水比冰形成前盐度更高。当然，冰融化会降低周围水的盐分。In the weddell sea antarctica，the densite water in the oceans is formed as a result of this freezing process，Which increases the salinity ofthis heavy water sinks and is found in t