大起大落 [dà qǐ dà luò]
1 大幅度地起落。形容变化大。
英 change radically; violent ups and downs;
1 起伏差度极大,非常不稳定。
英语 (of market prices etc) to rapidly fluctuate (idiom), volatile, significant ups and downs, roller coaster
大起大落
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