The variety of these mudstone and shales is very complex in lacustrinehigh-frequency cycle.

这些泥岩和页岩在湖相高频旋回中的变化相当复杂。

youdao

These travelling waves occur hundreds of times a night, and most commonly at a frequency, 1 cycle per second, which has been shown to depress the activity of synapses.

ECONOMIST: Memory formation

It could change the frequency of the Pacific pattern known as El Nino, a cycle of peculiar weather that affects ocean currents and rainfall across the planet.

NPR: Pacific Island Cultures Brace for Climate Change