短語詞組短語competition among the groups 內(nèi)部競爭conflicts among social groups 團體沖突work among ethnic groups 民族工作comparison among many groups 多組間比較Among the groups 介詞短語置于句首Among Ethnic Groups 在民族learning among small groups 小群體學習法harmonious relationships among ethic groups 和諧的民族關系comparison among groups 組間比較 返回 among groups