cost fluctuation

例句：

1. 1. The cost of productionhas increased significantly due to the fluctuation inraw materials prices.
   由于原材料价格的波动，生产成本显著增加。
2. 2. The company'sprofitability is closely tied to its abilityto manage cost fluctuations effectively.
   该公司的盈利能力与其有效管理成本波动的能力密切相关。
3. 3.The fluctuations in oil prices have hada significant impact on global economic growth.
   油价的波动对全球经济增长产生了重大影响。