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2、 Electricity is an important agent in the life of today、電是今天生活中一項重要的動力。
3、 Rain and sun are the agents which help plants to grow、雨水和太陽是促使植物成長的因素。
4、 I made my assistant my agent while I was abroad、我請我的助手在我出國期間做我的代理人。
5、 My agent has power to sign my name、我的代理人有權代我簽字。