The idiom "touch and go" has maritime origins, dating back to the early days of sailing. It referred to a situation where a ship's keel barely touched the sea bottom, allowing it to continue its voyage without running aground. The "touch" referred to this brief contact with the seabed, and "go" indicated that the ship could continue its journey. This idiomatic expression is used to describe a situation that is precarious, uncertain, or risky, often implying that the outcome is unpredictable and could swing in either direction.

英語での「touch and go」の定義と意味

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