a dog at his master
一只狗在咬它的主人
以上为机器翻译结果，长、整句建议使用 人工翻译 。
To become proficient at splitting a trainer must become a master of observing what his dog is doing, what his dog has done in the past and what his goals are.
精通拆分的训练者一定精通于观察哪些犬现在的行为，哪些是过去犬已经完成的，他最终的目标又是什么。
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One of the more unusual ones is that a ghost of a Newfoundland dog is said to appear at the grave of his master, John McNeill Boyd.
BBC: Haunted Dublin
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