association【 ə,səusi'eiʃən】 
n.协会，联合，结交，联想
 They are proud to be members of the Chinese Calligraphers Association.他们为自己是中国书法家协会的成员而自豪。
 He saw no association between the two ideas.他没看到这两种想法有联系。
assorted【 ə'sɔ:tid】 
adj.多样混合的；v.分类配全
This design comes in many assorted sizes and colors.
这个设计样式齐全，色彩多样。
 For my birthday, my husband bought me a box of assorted chocolates.我丈夫买了一盒什锦巧克力给我做生日礼物。
assume【 ə'sju:m】 
vt.假定，设想，采取，呈现
We assume his guilt.
我们假定他是有罪的。
 It is wrong to assume things before you know the facts.在了解事实以前就乱猜测是不正确的。
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assumption【 ə'sʌmpʃən】 
n.假定，设想，担任，承当，假装，作态；n. 圣母升天
Her assumption proved to be wrong.
她的假设被证实是错误的。
 The theory is based on a flimsy assumption.这个理论是基于一个站不住脚的假设的。
assurance【 ə'ʃuərəns】 
n.确信，断言，保证，担保
His arm around her gave her assurance.
他的手臂环抱着她，给了她信心。
 She required his word for assurance.她需要他用诺言担保。
assure【 ə'ʃuə】 
vt.断然地说，确保，保证，担保
I assure you that there is nothing to worry about.
我向你们保证，根本没有什么要担心的。
 Nothing can assure permanent happiness.没有什么东西能确保永久的幸福。
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asthma【 'æsmə】 
n.[医]哮喘 ，气喘
I developed ashthma well into my adult years
我得了哮喘，这病到我成年后还在困扰着我。
 The vet says that the dog is showing symptoms of asthma.兽医说，这只狗有哮喘病的症状。of asthma.
astonish【 əs'tɔniʃ】 
vt.使惊讶
The magician's next trick will astonish you.
魔术师的下一个魔术会让你大吃一惊。
 His behavior did not astonish me.他的行为没有让我感到吃惊。
astronaut【 'æstrənɔ:t】 
n.太空人，宇航员
As a child, I wanted to be an astronaut when I grew up.
在小的时候，我就想等长大后成为一名宇航员。
 Neil Armstrong was the first astronaut on the moon.阿姆斯特朗是第一位登上月球的宇航员。
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