against【 ə'genst, ə'geinst】 
prep.相反，反对，逆着，靠着，倚着
 Is anyone against that idea?有人反对这个观点吗？
 The baseball flew against that tree just now.棒球刚刚飞过来，碰到这棵树。
age【 eidʒ】 
n.年龄，成年，使用年限，同时期的人，时代；v.变老，上年纪，成熟
The legend was passed down from an earlier age.
传说是从很久以前流传下来的。
 Mike announced that his age was ten years.麦克说他十岁了。
agency【 'eidʒənsi】 
n.代理处，行销处，代理，中介
They signed an agreement with the agency.
他们与代理商签了协议。
 The agency confirmed the contract.该部门批准了那项合同。
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agenda【 ə'dʒendə】 
n.议程
There was no fixed agenda.
没有固定议程。
 After some discussion the agenda was adopted.经过讨论通过了议事日程。
agent【 'eidʒənt】 
n.代理（商）
He is an Insurance agent.
他是保险代理人。
 Do you think he is an FBI agent?你认为他是美国联邦调查局的密探吗？
aggravate【 'ægrəveit】 
vt.使恶化，加重
Don't aggravate me.
不要惹恼了我。
 Threats will only aggravate her.恐吓只能激怒她。
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aggregate【 'ægrigeit】 
n.合计，总计，集合体；adj.合计的，集合的，聚合的；v.聚集，集合，合计
They collected an aggregate of two thousand dollars.
他们总共筹到两千美金。
 The aggregate number of unemployed is fifty thousand this year.今年失业人数总共达五万人。
aggressive【 ə'gresiv】 
adj.好斗的，敢作敢为的，有闯劲的，侵略性的
Female CEO's are as aggressive as their male counterparts.
女首席执行官和他的男性对手一样敢作敢为。
 The doctor told the patient that her cancer was not aggressive.医生告诉她她的癌症不是恶性的。
agitate【 'ædʒiteit】 
v.搅动，摇动，煽动，激动
As a peace advocate, he agitated against all forms of institutionalized violence.
作为一个和平的倡导者，他极力反对一切形式的制度化暴力行为。
 As a child, he would always agitate his sister.小时候，他总是惹姐姐生气。
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