quacked

英 [kwækt]

美 [kwækt]

v. (鸭子)呱呱叫，嘎嘎叫
quack的过去分词和过去式

N-COUNT 庸医；江湖郎中；冒牌医生
If you call someone a quack or a quack doctor, you mean that they claim to be skilled in medicine but are not.
1. I went everywhere for treatment, tried all sorts of quacks.
  我四处求医，看过了各种各样的江湖郎中。
ADJ 江湖医术;骗人的医术
Quack remedies or quack cures are medical treatments that you think are unlikely to work because they are not scientific.
1. Why do intelligent people find quack remedies so appealing?
  为什么聪明人会被江湖医术所吸引？
VERB (鸭子)发出嘎嘎声
When a duck quacks, it makes the noise that ducks typically make.
1. There were ducks quacking on the lawn.
  草地上有几只鸭子在嘎嘎叫。
2. Quack is also a noun.
3. Suddenly he heard a quack.
  他突然听见一声嘎嘎的叫声。