1、跷跷板：seesaw 2、游乐场上有一处沙坑、一块跷跷板和一个秋千架。There was a sandpit, a seesaw and a swing in the playground. 3、在弟弟的要求下父亲为我们搭了个跷跷板。Upon my brothers request, father built us a seesaw.
seesawA seesaw is a long board which is balanced on a fixed part in the middle. To play on it, a child sits on each end, and when one end goes up, the other goes down.
