ticking time bomb

US

UK

B1 中級
n.名詞定時炸彈
The abandoned factory is a ticking time bomb, waiting for an accident to happen.
n.名詞定時炸彈 (健康)
His high cholesterol and sedentary lifestyle make him a ticking time bomb for a heart attack.

影片字幕

地球上最危險的湖泊 (The Most Dangerous Lake on Earth)

33:50地球上最危險的湖泊 (The Most Dangerous Lake on Earth)