雅思剑14流程图题目例文参考：水力发电

　　雅思剑14流程图题目例文参考：水力发电  本文为大家分享剑14中一道小作文，很多同学看到流程图都有点头疼，不知道要怎么整理思路。一般流程图看起来有些混乱，箭头指向也是不同于以往的流程图。

　　但是仔细分析之后不难看出，本题展现的其实是两个不同的工作原理：白天工作原理和晚上工作原理。分析出这一点，那么本题的写法自然就清晰得多了。如下例文供大家参考：

　　The working theory of a hydropower station built on a river is demonstrated by this flow chart. The operating mode of it varies fromthe daytime to the night. （开头段先是改写题目，再一句点出本题其实介绍的是白天黑夜两个不同的工作原理。）

　　By daylight, water stored in a high-level reservoir initially flows downstream through the intake under the dam, and then drives turbines, and finally arrives at a low-level reservoir. These turbines, powered by the water flow, can correspondingly operate agenerator in the power station. The electricity produced, in the last step, will be transferred to the National grid through power lines.（主一段着重于白天工作原理的描写。）

　　By night, water in the low-level reservoir can be pumped upstream to the high-level reservoir through the same riverway by turbines designed to be able to operate both clockwise and anticlockwise. In thisprocess, these turbines spin in the opposite direction as the daytime. The intake under the dam is a non-return one, which is closed at night in order to ensure that water can flow into thehigh-level reservoir, but not out.（主二段自然是聚焦于夜晚工作原理的描写。本段需要注意的是“反转的涡轮”和“闭合的intake”。这些都是图中细节，不应该忽视。）

　　Tosum up, the power station functions in totally opposite ways in the daytime and at night. In the whole process, water is utilized as the energy carrier, which at first releases its gravitational energy toproduce electricity and then helps transform electricity intogravitational energy. （结尾段总括全文，揭露出这个工作原理的本质。）

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