teetertotter
['ti:tə,tɔtə]
vi. 上下晃动；玩跷跷板
n. 跷跷板
同义词
参考例子
1.Two people balance on a teetertotter more commonly than just one (in the middle of the board), and sometimes two may swing together with one seated and the other standing and "pumping";
两个人坐跷跷板比一个人玩更普遍（一个人坐在翘翘板中间），有时两个人一起玩时，一头坐，另一头站，“上下摆动”；
英文解释
n.
1.a plaything consisting of a board balanced on a fulcrum; the board is ridden up and down by children
2.ride on a plank
网络释义
teetertotter
上下动; 上下晃动;
seesaw teeterboard teetertotter
跷跷板;