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[audioFiles]2016m8x/audio_ezfj_ezflisteningd_201607_196[/audioFiles] The Wat
[audioFiles]2016m8x/audio_ezfj_ezflisteningd_201607_196[/audioFiles] The Wat
游客
2024-09-18
15
管理
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The Water Cycle
The water cycle describes the continuous movement of water / on, above and below the surface of the Earth. / Although the balance of water on Earth remains fairly constant over time, / individual water molecules can come and go, in and out of the atmosphere. / The water moves from one reservoir to another. / In so doing, the water goes through different phases: liquid, solid and gas. /
The water cycle involves the exchange of heat, which leads to temperature changes. / For instance, when water evaporates, it takes up energy from its surroundings and cools the environment. / When it condenses, it releases energy and warms the environment. / These heat exchanges influence climate. / By transferring water from one reservoir to another, / the water cycle purifies water, provides the land with freshwater, / and transports minerals to different parts of the globe. / Finally, the water cycle plays a significant role / in the maintenance of life and ecosystems on Earth. /
解析
水循环
水循环描述的是水在地表、地表上方以及地表以下的不断运动。地球上的水平衡在一定时期内较为恒定。水在不同贮水库之间转移的过程中会经历液、固、气三态。水循环牵涉到热量转化,从而导致温度变化,影响着气候。
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