yo-yo
🇺🇸
/ˈjəʊ jəʊ/
🇬🇧
/ˈjəʊ jəʊ/
to fluctuate between two states, like going up and down
The company's profits yo-yoed throughout the year, rising and falling unpredictably.
公司的利润在一年中像溜溜球一样上下波动,不可预测地上升和下降。