Arid

　　Barren (来源：英语学习门户网站EnglishCN.com)

　　Drought

　　Artisan

　　Partisan

　　As it were

　　As it is

　　I am very busy as it is.

　　You seem busy as it were.

　　As ye == up to now

　　Aspiration

　　He has aspiration to high power

　　Aspire to

　　Fulfill his aspiration

　　Assertion

　　Asset

　　He will be a great asset to you.

　　Personal asset

　　asshole

　　At one stroke

　　He make a big amount of money at one stroke in stock market.

　　At times

　　At whim

　　The stock market is always at whim.

　　Attribute to

　　You success is attributed to you hard work.

　　Auction

　　Auditor

　　Austere

　　Austere

　　Autonomy

　　Xinjiang autonomous region

　　Ban

　　Sth. Was banned

　　Bar

　　Bar

　　Disbar

　　Barrier

　　Basin

　　Basin

　　Be subject to

　　Be subjected to

　　Subject

　　Beckon

　　She beckons me forward.

　　Beneficial

　　Beneficiary

　　Beneficiary

　　Biased

　　Bidder

　　Bid

　　Over bid

　　Under bid

　　Bids

　　Biosphere

　　Bizarre

　　He seemed bizarre today.

　　Quaint

　　Blueprint

　　Boom

　　Baby boom period

　　Breed

　　Crossbreeding

　　Brutal

　　Buoyant