April【 'eiprəl】 
n.四月(略作Apr)
April showers bring May flowers.
四月的雨带来五月的桂花香。
April is the lovers' month.
四月是恋人的季节。
apron【 'eiprən】 
n.围裙,外表或作用类似围裙的东西,[机]挡板,护坦
You should wear an apron when you bake.
当你在烤东西的时候,你应该穿围裙。
My apron is filthy.
我的围裙很脏。
apt【 æpt】 
adj.易于……的,有……倾向的,灵敏的,灵巧的,适当的,切题的,敏捷,倾向是
He is an apt pupil.
他是个聪明的学生。
He is apt at skating.
他擅长滑冰。
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aptitude【 'æptitju:d】 
n.恰当,智能,聪明,自然倾向
My daughter has no aptitude for athletics.
我女儿对运动没什么天分。
The interview asked me what my aptitudes and abilities were.
面试者问我的特长与能力是什么。
arbitrary【 'ɑ:bitrəri】 
adj.任意的,武断的,独裁的,专断的
It seems so arbitrary.
这样做似乎太武断了。
There was nothing arbitrary about his actions.
他的行动一点也不武断。
arc【 ɑ:k】 
n.弧,弓形,拱
The arc is a common feature in Western architecture.
拱形是西方建筑中最普遍的特色。
The curve ball is also called an arc line ball.
曲线球也叫做弧线球。
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arch【 ɑ:tʃ】 
n.拱门,弓形结构,拱形;v.(使)弯成弓形;adj.主要
The gymnast could arch her back very far.
那个体操运动员可以很大幅度地弯曲她的背。
The couple walked underneath the arch.
这对夫妇在这个拱门下面散步。
archaeology【 ,ɑ:ki'ɔlədʒi】 
n.考古学
I have been interested in archaeology since I was a small child.
从我还是孩童开始,我就对考古学感兴趣了。
Industrial archaeologists should be distinguished from other kinds.
工业考古学者应有别于其他类型。
architect【 'ɑ:kitekt】 
n.建筑师
He is not a draftsman;v he is an architect.
他不是绘图员,是个建筑师。
The architect designed the house.
那个建筑师设计了这栋房子。
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