来自拉丁fluere, 流动，波动，词源同fluent. -ct, 过去分词后缀。

1. Prices fluctuate from year to year.

物价年年波动.

2. Body temperature can fluctuate if you are ill.

人患病后体温可能会上下波动。

3. 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.

4. Under group conditions sow weight changes can fluctuate wildly.

在群饲的情况下,母猪体重波动很大.

5. Both the light and radio outputs fluctuate markedly.

光和无线电的输出都引人注目地起伏变化.