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seen one, seen them all
01
他们都是一样的
used to indicate that all types of a certain thing are almost the same
What is the origin of the idiom "seen one, seen them all" and when to use it?
The origin of the idiom "seen one, seen them all" is not attributed to a specific source but is a commonly used phrase expressing the idea that once you have witnessed or experienced one thing of a particular type, there is little variation or novelty in subsequent encounters.
