silver tongue

基本解释

A president with a big personal mandate, solid majorities in both chambers of Congress and a silver tongue ought to have been much braver.
縂統享有強大的個人授權，在國會兩院擁有壓倒性票數，而且又能言善辯，他本應該更勇敢點的。
But many inventors have trouble with verbal acuity, and many politicians gifted with a silver tongue need to be schooled in the concepts they are perforce required to address.
但是，許多發明家的口頭能力有麻煩，而許多政治家能說會道，但需要在他們需要講述的概唸上再受訓練。
blog.sina.com.cn
The silver tongue that charmed America during the campaign has been replaced by a tin ear.
在競選中令美國爲之榮耀的能言善辯的他已經被一個不怎麽聽取民意的人替代。

The brainy self-made son of Cuban immigrants has a silver tongue and is often called a Republican Barack Obama (in a good way, you understand).
ECONOMIST: Lexington
He was everything Democrats were seen as through the eyes of the Republican opposition: an effete, Ivy League flip-flopper who could debate with a silver tongue but had no backbone.
FORBES: Mitt Romney is the John Kerry of The GOP