跷跷板英文： seesaw; teeterboard; teetertotter; 例句：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.
跷跷板 [qiāo qiāo bǎn] [词典] seesaw; teeterboard; teetertotter; [例句]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.
seesaw
seesaw A 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.
就是说几年级的人吗
