He is attentive and animated, lithe and agile, solid and muscular without cloddiness.
他专注且活泼，柔韧而敏捷，肌肉发达但不笨重。
2
To enable the Collie to fulfil a natural bent for sheep-dog work, its physical structure should be on the lines of strength and activity, free from cloddiness and without any trace of coarseness.