canaries in the coal mine

名词 n.

英文释义

名词 n.
  1. plural of canary in the coal mine form-of,plural
    — For example, coral reefs are highly sensitive and vulnerable to hot temperatures, because hot temperatures cause the corals to bleach and eventually die; indeed, Cornell University marine ecologist, Drew Harvell, remarked that "In a way, corals are like the canaries in the coal mine for global warming" (Ten-Bruggencate, 2003).
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