Cách sử dụng
The word 'upheaval' means a sudden and great change of something, often causing confusion or disruption. It can be used to describe a big change or disruption in a person's life, the political situation, or the natural environment. For example, "The earthquake caused an upheaval in the city," or "The company's restructuring led to an upheaval in the employees' lives." The word can be used in both formal and informal contexts, but it is generally used to describe significant changes or disruptions.