This paper has studied the evolutionary tendency of depositional environment, sediment resource and its geomorphic forms.
对莱州湾的沉积环境演变趋势、泥沙资源及其沉积地貌形态进行了研究。
The evolutionary tendency or process by which animals or plants that are descended from a common ancestor evolve into different forms when living under different conditions.
在不同的条件下，由同一祖先延续下来的动物或植物，演变为不同形式的演变趋势或过程。
This tendency had the evolutionary value of stabilizing societies.
这种趋势具有稳定社会的进化价值。
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