attempt 1.(n.) trial, effort努力、尝试

　　[例] We have made an attempt to enter a new market.

　　2. (v.) try

　　attn (abbr) for the attentin of交由某人亲启

　　[例] He wrote ATTN Mr.Johnson. on the envelop.

　　auction (n.)the way of selling in which each item is sold at an open meeting to the person who makes the highest bid拍卖

　　[例] He sold his villa in the auction at 200,000 dollars.

　　auction (v.) to sell something to the person who makes the highest offer; sell something by auction拍卖

　　[例] His house was auctioned last week.

　　audio-conference (n.) a meeting with people who cannot all be together at the same time, using audio (telephone) equipment 电话会议

　　[例] The scheduled meeting has been cancelled for SARS, and we are planning to hold an audio-conference next week.

　　audit (n.) examination of the accounts of a company审计

　　[例] We require an audit confirmation from your account opening bank.

　　auditing (n.) official process of checking the accounts of a company to see if they represent a true picture审计

　　[例] The bank is under its annual internal auditing.

　　auditor (n.) person who audits审计员

　　authenticate (v.) proof that something is real or true 认证

　　[例] You should ask a skilled attorney to authenticate the signature at the bottom of this document in case that it is a forged one.

　　[同义词] certify