这个地区的温度波动很大，白天和晚上温差能有20度。

The temperature ___fluctuations in this area are huge, with a 20-degree difference between day and night.

最近几个月，汽油价格出现了大幅波动。

There have been significant ___fluctuations in gasoline prices in recent months.

股市价格的波动让投资者感到不安。

The ___fluctuations in stock prices make investors nervous.