Describes a person who is ignorant and lacking in intellect, metaphorically like animals dressed in human clothes, emphasizing their lack of true understanding or cultivation despite outward appearance.
他虽然穿着得体，但在讨论时却常常表现出襟裾马牛的一面，对基本常识一无所知。
Although he dresses appropriately, in discussions he often reveals his lack of intellect, knowing nothing about basic common sense.
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