seesaw例句

Marriage, however, is an emotional seesaw.
然而婚姻是一块感情跷跷板。

Prices have gone up and down like a seesaw this year.
今年的价格像跷跷板一样时涨时跌.

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.

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