seesaW(水骚)
seesaw
跷跷板怎么读？
teeterboard[`ti:tEbR:d]n.跷跷板
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.
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笨笨的2003
