Cách sử dụng
"Stack up" means to compare two or more things or people in terms of how they measure up to each other. For example, if you are deciding between two job offers, you might say "I need to stack up the benefits and salary of each offer to see which one is better." Or, if two people are competing in a race, you might say "Let's see how they stack up against each other." It's a way of evaluating or ranking things based on certain criteria.