Cách sử dụng
The word 'rate' is used to describe how often something happens or how much of something there is. For example, the rate at which a plant grows, or the rate at which you save money. You might also use the word 'rate' to describe how much something costs per unit of measurement. For instance, the rate of a taxi is how much money you pay for every kilometer you travel. In general, 'rate' is used to compare two things, whether it is the speed of two cars or the cost of two items.