大学英语四级作文：能源问题 关于能源的问题成为了近年来大家关心的热点问题。很多不可再生能源需要大家去保护，节约。为了帮大家理清写这类作文的思路，我们来看一篇范文：Ever since early this 。
可再生能源 优缺点 英文 Solar energy into other can speed.Use value high，an inexhaustible，tiny pollution.The disadvantage expensive.Wind power an inexhaustible，low cost，tiny faults turbine noise pollution is limited by regionWater for water and air pollution little flaw is limited by region dam will influence ecological environmentGeothermal energy is an inexhaustible，no pollution faults is limited by region agree with 33|comment(2)太阳能 转化成其它能e799bee5baa6e79fa5e98193e78988e69d8331333330333662速度快.利用价值高，用之不竭，污染极小.缺点 费用昂贵.风能 用之不竭，成本低，污染极小 缺点 涡轮噪音大受地域限制水能 对水和空气污染小 缺点 受地域限制水坝会影响生态环境地热能 用之不竭，没有污染 缺点 受地域限制赞同
海洋能方面的英语翻译.. Ocean energies(OEs)are referred to as a group of renewable energies attached to(这是按照你的字面意思翻译的，我觉得改为contained in较好)the oceanic water.Through a variety of physical processes，the ocean recieves，stores(reserves)，and emits energies in the forms of tide，wave，temperature difference，salinity gradient，and ocean flow，etc.The earth's surface area is about 5.1×10^8km^2，including 1.49×10^8km^2 land surface area(account for 29%)and 3.61×10^8km^2 ocean surface area.Land mean altitude is around 840m with sea surface as a referrence，while the mean depth and volume of the ocean are 380 m and 1.37×10^9km^3，respectively.The endless ocean can not only provide people with shipping(transportation)，water resource，and rich minerals，but also can store solar energy and the derived wind energy in the forms of thermal energy and mechanical energy，and these energies are not easy to loss as those in the land or air.OEs have the following features：1.OEs have large storage in the 。
