seesaw[5si:sC:]n跷跷板 seesawvi前后摇动；上下晃动 交替；起伏 玩跷跷板seesaw[5si:sC:]n.跷跷板上下(或前后)移动, 动摇交替占优势的竞争play at seesaw玩跷跷板the seesaw between the attackers and the defenders攻守双方的拉锯战seesaw[5si:sC:]adj., ad忽上忽下的[地]; 忽前忽后的[地], 摇摆不定的[地]I don't remember ever being seesaw after I made my mind up.我不记得下决心后曾动摇过。Then the lead went seesaw between the two runners.接着两名赛跑运动员就拉锯似地交替领先。seesaw[5si:sC:]vt.使作跷跷板式运动seesaw sb. skywards把某人抛得很高seesaw[5si:sC:]vi.玩跷跷板, 动摇, 上下动, 前后动交替, (温度等)升降, 涨落The boat seesawed in the heavy sea.小舟在波涛汹涌的海中颠簸不已。The score had been seesawing from the very start.从一开始比分就成拉锯局面。seesaw[ 5si:sC: ]n.秋千参考资料：
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