水的流速约为每秒1.5米。
有规律的重复活动如声波、光波、无线电波都有一个特定的频率,或者说是每秒的波动次数。
Regular repeating actions such as sound waves, light waves, or radio waves have a certain frequency, or number of waves per second.
当裁判以每秒两米的速度移动时,裁判做出了正确的判罚。
Correct decisions came when the referees were moving at a speed of about 2 meters per second.
And then we have c, the speed of light, 2.998 times 10 to the 8 meters per second.
然后我们知道光速等于,2,998乘以10的8次方米每秒。
That means our energy is equal to 6.626 times 10 to the -34 joules times seconds.
这意味着能量等于,6,626乘以10的-34次方焦耳每秒。
One way to mark time is to imagine it carries a clock as it moves, and put markers every second.
标记时间的一种方法是,想像它带着时钟运动,并且每秒做一次标记
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