The changes of water cycle elements depend closely on climate variations and human activity impacts.
水循环主要要素的变化取决于气候条件的变化与人类活动的影响。
The zodiac runs on a 12-year cycle, and each year is associated with the five elements that Chinese mystics make up the universe: metal, water, wood, fire and earth.
生肖每12年一轮回，并且每年和中国神话中构成宇宙的五个元素组成：金，木，水，火，土。
Water balance elements of urban hydrological cycle have been measured and investigated, then checked by means of water balance equation in urban areas.
通过精测与调查收集城市水资源要素，并用城市水平衡方法检验。
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