If already registered, please provide your IB number.

如已登记，请提供您的介绍经纪商号码。

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The Distributor shall revoke its application for registration unconditionally, if already registered, this right shall be transferred to the Manufacturer free of charge.

经销商应无条件撤回其注册申请，已登记的，将该权利免费转让给制造商。

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Users need to find out if a domain name is already registered or is still available.

用户需要查明某个域名是已经被注册过还是仍然可用。

《柯林斯英汉双解大词典》

Danielle Grufferty, NUS vice-president, said students would be talking to locals about education and other issues and helping them to fill out voter registration forms if they were not already registered.

BBC: Sheffield hosts National Union of Students conference

Go to GottaRegister.com. (Applause.) If you don't know how to vote -- maybe you're 17, turning 18, first time -- go to GottaVote.com. (Applause.) If you're already registered and you're already going to be voting, then you've got to grab your friends, you've got to grab your neighbors, you've got to grab your cousins, your aunts and your uncles -- (applause) -- you've got to corner your -- and your grandparents. (Laughter.) You've got to talk to your co-workers.

WHITEHOUSE: The White House

First of all, if you're not already registered, I need you to register to vote.

WHITEHOUSE: Remarks by the President at Campaign Event