Cách sử dụng
The expression "pile up" means to accumulate or gather in a heap or mass. It can be used in different situations, such as when objects are stacked on top of each other, when there are too many tasks to complete at the same time, or when there is a buildup of something, like snow on a driveway. For example, "The dishes were piled up in the sink" or "I need to finish this work before the deadlines pile up."