短語詞組用作名詞 (n.)動(dòng)詞+～disclose one 's source of 泄露…的來源discover the source 發(fā)現(xiàn)…的源頭take its source at 發(fā)源於…形容詞+～rich source of information 豐富的信息來源authoritative sources 權(quán)威出処chief sources 主要收入historical sources 史料power sources 能源介詞+～as a source of food supply 作爲(wèi)食品供應(yīng)的一個(gè)來源from all sources 從各個(gè)方麪trace to its source 追根尋源短語 返回 sources