相关单词近义词 alternate 交替, oscillate 振动, fluctuate 波动, swing 摇摆, teeter-totter 跷跷板, teeter 摇摆, teetertotter 跷跷板, totter 蹒跚, teeterboard 跷跷板临近词seethe, seer, seesaw game, seesaw match, seesaw battle, seesaw switch, seesaw murmur, seesaw motion, seesaw action, seesaw policy, seesaw effect, seesaw circuit 返回 seesaws