Then you should not be irritated, Mary, because the dog does not know it is wrong to play with your toy.
那么玛丽，你不应该生气，因为狗不知道玩你的玩具是不对的。
The shepherd dog does not know as much about most things as some other dogs and yet he understands very well how to take care of sheep.
虽然牧羊犬不懂得基他种狗所懂的绝大部分事物，可是牧羊犬却精通于怎样看护好羊群。
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