These waves oscillate at around 10-100 cycles per second.

这些波以每秒10-100个周期的速度震动。

We can hear sounds at frequencies as great as 20,000 cycles per second, and some animals have ever faster ears.

我们能听到每秒高达2 万个周期（2 万赫兹）的频率，而有些动物的耳朵更灵敏。

Somehow, nature has stumbled across a system that can oscillate or amplify at 20,000 cycles per second, or even more.

大自然似乎设法误打误撞地发现了一个能以 2 万赫兹，甚至更高的频率振动或扩音的系统。

One Hertz means one cycle per second.

一赫兹表示每秒一个周期。

These oscillations are measured in cycles per second, using units called Hertz.

这些振荡以每秒周期数为单位进行测量，使用称为赫兹的单位。

This is especially true of ultrasound,which includes any sound wave exceeding 20,000 cycles per second.

超声波尤其如此，它包括每秒超过 20,000 个周期的任何声波。

PATRICK PURDON: This really low frequency oscillation, about one cycle per second or less.

PATRICK PURDON：这种振荡频率非常低，大约每秒一个周期或更短。

The distance between each peak determines the wave's frequency, measured as cycles per second, or hertz.

每个峰之间的距离决定了波的频率，以每秒周期数或赫兹来衡量。

If it does that five times in second, then someone might say it has a frequency of five cycles per second.

如果每秒执行五次，那么有人可能会说它的频率为每秒五个周期。

Despite being the first processor of its kind, it had a mind-blowing clock speed of 740 Kilohertz -- that’s 740 thousand cycles per second.

尽管是同类处理器中的第一款，但它的时钟速度达到了令人惊叹的 740 千赫兹——即每秒 74 万个周期。

Despite being the first processor of its kind, it had a mind-blowing clock speed of 740 Kilohertz -- that's 740 thousand cycles per second.

尽管是同类处理器中的第一款，它的时钟速度却达到了令人惊叹的 740 千赫兹——即每秒 74 万个周期。

One megahertz is one million clock cycles per second, and the computer or even phone that you are watching this video on right now is no doubt a few gigahertz -- that's BILLIONs of CPU cycles every… single... second.

1 兆赫兹是每秒一百万个时钟周期，而您现在正在观看此视频的计算机甚至手机无疑是几千兆赫兹——即每… 每秒数十亿个 CPU 周期。