“wake-up call” 用于描述一件事作为警示，促使某人或某个行业意识到潜在的重大问题；“red flag” 和 “ticking time bomb” 则表达了事物的危机性质，提示必须尽快解决的紧急问题。 The two parties engaged in a blame shift over the plane crash. 两党在飞机事故上展开了甩锅。

Scientists researching Alpine glaciers store ice in Antarctica. By analysing air bubbles in the ice they may be able to predict the future ...