The idiom "can of worms" originated from the practice of fishing using live bait, where worms were commonly stored in cans. Opening a can of worms refers to a situation or topic that, once introduced or addressed, leads to a complex and troublesome set of problems or difficulties. It is used to suggest that by delving into a particular issue, one is likely to encounter a multitude of interconnected and challenging issues that can be difficult to resolve.

英語での「can of worms」の定義と意味

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