quack

名词 quack:

1. an untrained person who pretends to be a physician and who dispenses medical advice
2. the harsh sound of a duck

动词 quack:

1. utter quacking noises
2. act as a medical quack or a charlatan

形容词 quack:

1. medically unqualified

1. A person who makes elaborate, fraudulent, and often voluble claims to skill or knowledge; a quack or fraud.
   假内行，庸医，骗子精心制作或制造欺骗的人，而且对自己的技术或知识常常夸大其辞的人; 江湖医生或骗子
2. A quack cure.
   庸医般的治疗
3. He is a quack doctor.
   他是个庸医。

quack

n.（名词）
The characteristic sound uttered by a duck.
嗄嗄声：鸭子所发出特有的叫声
v.intr.（不及物动词）
quacked,quack.ing,quacks
To utter the characteristic sound of a duck.
嗄嗄地叫：发出鸭子般的特殊叫声

来源：
Middle English quek [of imitative origin]
中古英语 quek [源自于拟音的]

【引伸】
quack.y
adj.（形容词）

---------------另--------------
quack
quack 2

n.（名词）
An untrained person who pretends to be a physician and dispenses medical advice and treatment.
冒牌医生：未经训练而装作医生并提供药方和治疗的人
A charlatan; a mountebank.See Synonyms at imposter
庸医，江湖郎中参见 imposter
adj.（形容词）
Relating to or characteristic of a quack:
庸医的：有关庸医的或有庸医特征的：
例句：
a quack cure.
庸医般的治疗

v.intr.（不及物动词）
quacked,quack.ing,quacks
To act as a medical quack or a charlatan.
当冒牌医生或江湖郎中

来源：
Short for quacksalver
quacksalver的简写

【引伸】
quack.ery
n.（名词）
quack.ish
adj.（形容词）
quack.ishly
adv.（副词）