Cách sử dụng
When people say "alarm bells ring" or "start ringing," they mean that there is something wrong or concerning happening. It can refer to a situation where there is a potential problem, danger, or warning sign. For example, if you are investing in a company and you hear that the CEO just resigned suddenly, that could be an alarm bell ringing, since it might mean something is wrong with the company. It's a way of saying that there is reason for concern, and it's important to pay attention to what's happening.