Cách sử dụng
The phrase "fill up" means to add more of something to make it full. For example, when you pour water into a cup, you fill it up until it reaches the top. You can also use "fill up" to talk about putting gas in a car. When the gas tank is empty, you need to fill it up with gas so the car can run. In a different context, you can use "fill up" to describe feeling full after eating a meal. You might say, "I ate too much and now I'm filled up."