quacking

n.(鸭子)嘎嘎叫声；庸医；冒充内行的人

v.嘎嘎地叫；大声闲谈；冒充内行

adj.骗人的

A duck's quack doesn't echo and no one knows the reason. 鸭子呱呱叫是不会产生回音的

She discovered that the man was a quack. 她发现那人是个庸医。

The quack was stormed with questions. 江湖骗子受到了猛烈的质问。

He landed among the tame ducks, and began to waddle around and quack merrily. 他落在了家鸭群中,开始四处踱来踱去,欢叫个不停,还吃起了地上的谷物。

He was told that it's a quack medicine. 他被告知这是假药。