fluctuate

Oil prices fluctuated [=became higher, lower, etc.] throughout the year.石油价格全年都在波动。

fluctuating prices不稳定的物价

His popularity has fluctuated during his term in office.任职期间，他受欢迎的程度时高时低。

In the desert, the temperature fluctuates dramatically.沙漠中温度变化很大。