Mother duck said quack quack quack. But only four little ducks came back.
鸭妈妈叫啊叫，但是只有四只小鸭子回来了。
Ruby USES what is affectionately referred to as "duck typing" - if it accepts a "quack" message, it must be a duck.
Ruby使用所谓的“ducktyping”——也就是说，如果它接受“鸭叫”消息，那么它一定是鸭子。
Duck duck waddle back, we like to hear you quack quack quack!
鸭子，鸭子，摇尾巴，我们喜欢听你呱呱呱。
Said the Duck to the Kangaroo, 'I would sit quite still, and say nothing but "Quack, " The wholeof the long day through!
鸭子对袋鼠说，“我会安静地坐着，一动也不动，除了嘎嘎叫，什么也不说。一整天我都会这样子！
Six little ducks that I once knew, Fat ones, skinny ones, fair ones too, But the one little duck with the feather on his back, He led the others with a quack, quack, quack!
中文歌词：我曾经知道六只小鸭子，胖的，瘦的，还有漂亮的，但是在他的背上插根羽毛的这只小鸭子，他嘎嘎叫，嘎嘎叫，嘎嘎叫地带领着其他的小鸭子！
He was delighted to find that metallic sounds could become human voices, and that human voices could be made to quack like a duck.
他发现金属敲击的声音可以富有人性化，为此他欣喜欢悦，而人性化的声音又能进而加工成类似鸭的叫声。
"Quack! Quack!" called the duck. "Want to go for a swim?" the spider didn't answer. She had now finished her web.
喵喵，猫叫道，想去打个盹吗？蜘蛛没有回答，她正忙着织网呢。
鸭子叫，“嘎嘎嘎”。
鸭子叫，“嘎嘎嘎”。
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