The Mastiff is a large, massive, symmetrical dog with a well-knit frame.

马士提夫犬是一种高大、魁梧、匀称的狗，结构紧密。

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The Mastiff is a large, massive, symmetrical dog with a well-knit frame.

马士提夫犬是一种高大、魁梧、匀称的狗，结构紧密。

youdao