释义
n. 分离,分居,缺口
例句
1. He was unhappy because of his separation from his mother.
他因与母亲分离而感到不快。
2. The treatment of metal or the separation of metal from ores and ore concentrates by liquid processes, such as leaching, extraction, and precipitation.
水冶金术通过液体过程，象过滤，提炼，沉淀等方法处理金属，从矿石中或矿石浓缩物中分离出金属