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1. Oxford American Dictionary

   canary in the coal mine

   • ph.
     an early indicator of potential danger or failure
2. • 相關詞

   canary in the (or a) coal mine

   • ph.
     an early indicator of potential danger or failure

   Oxford American Dictionary

   canary in the (or a) coal mine

   • ph.
     an early indicator of potential danger or failure

   Oxford Dictionary

3. • 更多解釋

   canary in the coal mine

   • ph.
     an early indicator of potential danger or failure

   Oxford Dictionary