my agent while I was abroad. 我请大卫在我出国期间做我的代理人。 aggressive a. 好斗的, 勇于进取的 He is very aggressive in many ways. 他在很多方面跟别人格格不入。 ago ad. 以前 I went to Beijing three years ago. 三年前我去了北京。 agree vi. 同意, 持相同意见 I don't agree with Philips on many things. 我和非力浦在许多事情上意见不一致。 His deeds does not agree with his words. 他言行不一。 With respect to your proposal, we are sorry to say that we cannot agree to it. 关于你的提议,很抱歉我们无法同意。 agreement n. 协定, 协议, 同意 They reached an agreement about the plan. 他们在这个计划上意见一致。 agriculture n. 农业, 农艺, 农学 Agriculture is the foundation of the national economy. 农业是国民经济的基础。 ahead ad. 在前, 向前, 提前 There isa bright future ahead of us. 我们有无限光明的前途。 I have to finish the task ahead of time. 我得提前完成这项任务。 One runner forged ahead of the others and won the race. 一名赛跑运动员突然加快速度冲到其他人的前面而获胜。 aid n. 帮助, 救护, 助手