The middle-aged man is the plenipotentiary of this negotiation.

这位中年人是这次谈判的全权大使。

As a plenipotentiary, you need to take responsibility for your actions and speech.

作为全权代表，你需要对自己的行为和言论负责。

He solved the problem with plenipotentiary powers.

他以全权解决了这个问题。

The minister is given plenipotentiary power in the trade negotiation.

该部长获有全权进行贸易谈判。

The minister was given plenipotentiary powers in the trade negotiations.

该部长获有全权进行贸易谈判。全权大使。

An ambassador extraordinary and plenipotentiary shall be the head of an embassy.

特命全权大使为大使馆的馆长。

to decide on the appointment or recall of plenipotentiary representatives abroad;

决定驻外全权代表的任免；