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- population natural dynamics 人口自然变动
- The place or type of site where an organism or population naturally occurs. 指生物体或生物族群自然分布的地方或地点。
- The population natural growth rate 人口增长率
- The mountains were bamboo and pine and cypress fluttering in the breeze, rickety autumn leaves danced the first waltz, unknowingly being, showing a natural dynamic superb but the United States. 深山里得竹树与松柏迎风招展，摇摇晃晃的枝叶跳起了秋的第一支圆舞曲，在不知不觉之中，流露出了一种高超而又自然的动感美。
- It is natural for a cat to catch mice. 猫捉老鼠是本能。
- It's natural to slack2 off towards the end of a hard day's work. 一天紧张工作快结束的时候有些放松是自然的。
- Many natural materials are becoming scarce. 许多天然原料越来越少。
- This city has a population of more than 1,000,000. 这个城市人口超过一百万。
- The dynamics of natural and human-made bodies in outer space. 航天动力学，天体动力学将天然及人工天体推入外层空间的动力学
- A desert has no settled population. 沙漠没有固定的居民。
- Our motherland flows with natural resources. 我们祖国蕴藏着丰富的天然资源。
- There was a steady increase in population. 人口在不断增长中。
- Events took their natural course. 事态依自然进程发展。
- What is the population of this country? 这个国家的人口是多少？
- She has a natural wave in her hair. 她的头发自然卷曲。
- Magnetism is a natural phenomenon. 磁力是一种自然现象。
- It is difficult to be natural when one is tense. 人在紧张的时候很难泰然自若。
- Disease has decimated the population. 疾病使大部分人死亡。
- The population of the island has sunk from100 to20. 这个岛上的人口从容不100人减少到了20人。
- The egoism of an artist sometimes seem natural. 艺术家的自负有时看起来是自然的。
