canary in a coal mine
成語所屬單字canary
canary in a coal mine — 慣用語
1. a person, thing, or situation that serves as an early warning of danger or probl
1.慣用語
釋義
煤礦裡的金絲雀 — 預示危險的早期信號
a person, thing, or situation that serves as an early warning of danger or problems that are about to affect a larger group
例句
The sudden drop in the river's fish population was a canary in a coal mine for the region's water quality.
Rising costs in the housing market are often a canary in a coal mine for the broader economy.
When a few small banks began to fail, experts saw it as a canary in a coal mine for the whole financial system.