群落

With theoretical introduction and example analysis, the relationship between the living beings and it's environment could be elucidated at the level of individual, population, biocoenosis, ecosystem, and biosphere, respectively, aiming at making the students have the capability to grasp the fundamental knowledge system of ecology and ecological ideology, and improving the understanding of the environment problem.

本课程主要从个体，种群，群落，生态系统和生物圈等不同层次上分析生物与环境之间的关系方式，通过理论推介，案例剖析，使学生掌握生态学的基本知识体系和思想方法，形成宏观的生态思维，提高对当前资源和环境问题的认识能力和把握水平。

Community ; Index of similarity ; Index of diversity ; Cluster analysis ; Dendrogram ; Demersal fish ; Deep sea ; East China Sea

群落；相似性指数；多样性指数；聚类分析；树状图；底层鱼类；深海；东海

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。