There were ducks quacking on the lawn.草地上有几只鸭子在嘎嘎叫。For the rest it was just a noise, a quack - quack - quacking.除此之外,便是一片噪声, 一片嘎嘎嘎的叫嚣.The eyeless creature with the quacking voice would never be vaporized.那没眼睛的鸭子嗓也不会给蒸发....

v.（鸭子）发出嘎嘎声( quack的现在分词 )...

quacking的音标：...