常用短語介紹：A wake-up call 警鐘、警告
一個能夠起到警示作用的事件就可以被稱為 “a wake-up call，警鐘 ”。為的是警告一個人避免重犯同樣錯誤或防止將來出現更大問題。
例句
The plane crash was a wake-up call for airlines never to compromise on safety.
When I failed my mock exam it was a real wake-up call. From then on I studied and revised hard.
請注意
如果你突然發現什么不好的事情已經發生了或者正在進行中，這種情況可以用“wake up to the fact”來表達，意思是覺醒、醒悟過來。
例句
You need to wake up to the fact that you are not going to pass your exams if you don’t start working harder.
It took a while for my parents to wake up to the fact that their business was failing.
