swings
n.
摆动( swing的名词复数 );
秋千;
显著的变化;
v.
（使）摇摆( swing的第三人称单数 );
（使）摇荡;
（使）旋转;
（使）突然转向;
例句:
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Educational practice is liable to sudden swings and changes.
教学实践中经常会出现突然的变化与改革。
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Larry began suffering severe headaches and violent mood swings.
拉里开始出现严重的头痛和剧烈的情绪波动。
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Dieters suffer from violent mood swings.
节食者会有激烈的情绪波动。
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What they cannot compete with is the swings.
来自SA
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Big swings can occur in currency values, too.
来自WSJ
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Such swings can occur anytime, for many reasons.
来自WSJ