起伏现象 meaning in English
fluctuations
up-down phenomenon
Examples
- They found that changes in the rate of spread and the timing of peak mortality each year correlated with yearly fluctuations in monthly airline passenger volume
他们发现，每年的速率和一定时间内最高峰死亡数的变化与每年的每个月份航空乘客容量的起伏现象有关联。