| 1. | Frequency is measured in hertz, or cycles per second .
频率用赫兹即每秒钟的周数来计算。 |
| 2. | The shaft and discs rotate at about forty revolutions per second .
竖轴和磁盘每秒钟大约旋转40转。 |
| 3. | My tireless little cilia make about ten sweeping strokes a second .
我那不怕疲劳的小纤毛每秒钟约做10次清扫动作。 |
| 4. | A clock signal with 1 million pulses per second is referred to as a 1 megahertz .
每秒钟有一百万个脉冲及时钟信号，也称兆赫（）时钟信号。 |
| 5. | It prints out about 2400 characters per second in readable form, with no decoding to be done .
它每秒钟能打出2400个字符，而且是无须翻译的、可直接阅读的形式。 |
| 6. | The probability that exactly one vehicle will arrive at the single booth per second is a very small number .
到达某一个收费站的车辆，每秒钟恰有一辆的概率是很小的。 |
| 7. | He had to answer fast, for every second of hesitation was a slur on her, on him, and on their marriage .
他非得迅速回答不可，因为每秒钟的踌躇对她，对自己，对他们的婚姻都有损害。 |
| 8. | At the cinema we see successive photographs projected on a screen at the rate of twenty-four frames per second .
在电影院，我们看到的是以每秒钟24幅画面的速度投射到银幕上的连续照片。 |
| 9. | I can only face myself honestly in every second
我可以每秒钟诚实地面对自己。 |
| 10. | Light can travel 7 . 5 times around the earth s equator
地球光每秒钟可以环绕地球赤道 |
