fluctuate的例句（fluctuate在句子中的用法）

• The actual cost may fluctuate above and below that standard. 实际成本可在标准成本的上下范围内增减.
• Prices fluctuate from year to year. 物价年年波动.
• Body temperature can fluctuate if you are ill. 人患病后体温可能会上下波动。