Cách sử dụng
A seesaw is a kind of playground equipment. It is a long board that is balanced on a point in the middle, so that when one end goes up, the other end goes down. Two people can sit on opposite ends of the board and push themselves up and down. "Seesaw" can also be used as a verb. For example, "The stock market seesawed up and down all day." This means that the prices of stocks went up and down repeatedly, like people playing on a seesaw.