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.
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.
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