①(牛津P320)Hydrogen and oxygen combine to form water.
氢与氧化合成水。
②(朗文P354)Steel is produced by combining iron with carbon.
钢是由铁加碳炼制成的。
③Internet companies have been working with Chinese TV makers like Changhong and Haier to combine Internet services with traditional TV sets.
已有网络公司同中国电视制造商如长虹、海尔等联合在传统电视的基础上又推出了网络服务。
④The two countries combined against their enemy.
这两个国家联手抵抗共同的敌人。
