Cách sử dụng
'Hilly' is a word that we use to describe land or terrain that is full of hills or small mountains. We might use this word to talk about areas that have lots of ups and downs, or that are not flat like a piece of paper. For example, if we are planning to go for a hike, we might say that the trail is hilly if it has a lot of steep inclines and declines. We might also use this word to describe the area where we live, if it is full of hills instead of being completely flat. Overall, 'hilly' is a useful word for describing the geography of an area.