英语词汇get one-s back up的起源、历史背景-英语词源词典

get one’s back up. Once upon a Tom someone noticed the hair standing up on a cat’s humped back and coined this ex- pression. No one knows exactly when the aggressive arching of an angry cat’s back suggested this phrase for humans aroused into anger, but it’s surprising that the phrase seems no more than two centuries old, for an angry cat with its back arched high is an impressive sight, and a common one wherever there are felines wild or domestic. Cats were introduced to Europe long before the Crusades and became valued pets, despite their aloofness, when they demonstrated a proficiency at rat killing at least equal to the ferret’s, and they proved far more prolific and easier to keep.

词汇	get one-s back up
词源	get one’s back up. Once upon a Tom someone noticed the hair standing up on a cat’s humped back and coined this ex- pression. No one knows exactly when the aggressive arching of an angry cat’s back suggested this phrase for humans aroused into anger, but it’s surprising that the phrase seems no more than two centuries old, for an angry cat with its back arched high is an impressive sight, and a common one wherever there are felines wild or domestic. Cats were introduced to Europe long before the Crusades and became valued pets, despite their aloofness, when they demonstrated a proficiency at rat killing at least equal to the ferret’s, and they proved far more prolific and easier to keep.
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