那个推销员真是个能说会道的家伙，几句话就说服了我买下那台吸尘器。

The salesman was such a skilled ___speaker that he convinced me to buy the vacuum cleaner in just a few sentences.

别相信那个推销员，他是个油嘴滑舌的骗子，专门忽悠老年人买没用的保险。

Don't trust that salesman—he's a smooth-talking ___con artist who tricks elderly people into buying useless insurance.