canary in the coal mine

名词 n.
中文释义

英文释义

名词 n.
  1. Alternative form of canary in a coal mine. alt-of,alternative
    — The second canary in the coal mine — along with the Arctic— is Antarctica, the largest mass of ice on the planet by far.

词形变化

canaries in the coal mine plural canaries in coal mines plural canaries in the coal mines plural
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