需要办理的英文

transact business

都不是．办理这个词是中国人的说法，是指中国人在申请什么证书的需要的步骤的说法，这类词最好不按照字面翻译．获得某种证书，英语里最常用的应该是to apply，to certify, to get a license 等等．

办理业务 : transact business或许你要与我经常去欧洲各地参加会议和办理业务。You probably have to come along with me to conferences and things on the Continent from time to time.