... any dangerous gas build-ups. As long as the canary in a coal mine kept singing, the miners knew their air supply was safe. A dead canary in a coal...
...煤礦 coal mining (挖煤礦) extracting coal mine (機器挖煤礦) coal miner (挖曠工)
...snake struck. 那條蛇稍稍抬起身,咬了一口。 罷工[(+for)] The coal miners struck for better safety conditions. 煤礦工人罷工要求改善...