Thee small pool in the distance, the duck mother followed by many cute little duck, the happy fish swimming in the water, the water unconsciously become very warm.
远处的小池边,鸭子妈妈后面跟着许多乖巧可爱的小鸭子,水中的鱼儿欢快的游着,池水在不知不觉中变得十分温暖。
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。
Once, biologists thought that ducklings followed the mother duck because of instincts.
曾经,生物学家认为小鸭子跟随母鸭是出于本能。
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