I tried to argue but he countered that the plans were not yet finished.

我试图争辩，但他却反驳说各项计划尚未完成。

youdao

He countered my plan with one of his own.

他提出自己的计划与我的计划抗衡。

youdao

He countered my plan with one of his own.

他用他自己的计划与我的计划抗衡。

youdao

He countered that the popular video game Halo likely uses swarm intelligence as well.

FORBES: SAPVoice: Swarm Intelligence: How The Behavior Of Ants Can Be Used To Improve Everything We Do.

He countered that criticism by saying that the job of promoting trade and investment "should transcend the factionalism of party politics".

BBC: Many civil servants 'deserve axe'

He countered such attacks vehemently, saying such a conclusion rested on a slanted reading of what he had said on the subject.

ECONOMIST: Steve Schneider