| 单词 | canary in a coalmine |
| 释义 | canary in a coalminesomething that gives an earlywarningofdangerorfailure, in the way that, in the past, acanarytaken into amine(= anundergroundplacefordiggingcoalorminerals)woulddieif theairwas notsafetobreathe,warningthepeopleworkingthere: TheArctichas been called thecanaryin a coalmine when it comes toglobalwarming. He likensbutterfliesto thecanaryin the coalmine, being the first tosufferwhen theenvironmentis understress. Thecanaryin the mine is theairport. Aslongasitsusageis down,hotelusageand thelocaleconomywill be down. Threats & warnings
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