Mr. A was counsel for the plaintiff, and Mr. B for the defendant.

A先生作原告的辩护人， B先生作被告的辩护人。

《新英汉大辞典》

When the plaintiff has elaborated his casewith witnesses and evidence, the defendant is given a chance to refute theplaintiff's charges, arguments, and evidence.

在原告用证人和证据详尽阐述了他的案情后，法庭会给被告一个机会反驳原告的指控、证词和证据。

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Article 33 in the course of legal proceedings, the defendant shall not by himself collect evidence from the plaintiff and witnesses.

第三十三条在诉讼过程中，被告不得自行向原告和证人收集证据。

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Ericsson and ZTE have chosen to trade off the role of both plaintiff and defendant, since each company is suing the other for several patent infringements.

ENGADGET: Patent spar between ZTE, Ericsson escalates to courtroom showdown

It is constantly involved in litigation, both as a plaintiff and defendant.

FORBES: Connect

Materiality is a fundamental element for an action alleging a failure to disclose under the securities laws and this is certainly the case for a plaintiff alleging that a defendant violated such duty by not properly disclosing the real nature, purpose, and scope of Shariah.

CENTERFORSECURITYPOLICY: Shariah��s Black Box