基本解释小群体同根派生 microcommunity相关词英汉例句Analysis of Microcommunity Structure and Its Diversity of Shenzhen Urban Forest during Rapid Urbanization 快速城市化过程中深圳森林小群落结构特征及其多样性研究microcommunity更多例句专业释义环境科学技术小群体小群落生物学小群落