The cows' rumps were marked with a number. 奶牛的臀部标着一个数字。Suddenly the cow kicked up its hind legs. 奶牛突
The cows' rumps were marked with a number.
奶牛的臀部标着一个数字。
Suddenly the cow kicked up its hind legs.
奶牛突然尥起了蹶子。
Some children develop a sensitivity to cow's milk.
有的孩子对牛奶过敏。
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