如果您要求的时间间隔为1秒,那么获得的回调时间间隔可能是1秒、1.2秒、9秒或任何其他时间。
If you ask for a second, you might get the callback at 1 second or 1.2 seconds or 9 seconds or any other time.
其结果是,第一组孩子们的玩耍总时间(119秒)比第二的(180秒),第三的(133秒)和第四的(206秒)都少。
The upshot was that children in the first group spent less time playing (119 seconds) than those in the second (180 seconds), the third (133 seconds) or the fourth (206 seconds).
如果你已经增加到跑30秒+走30秒的循环了,那当天很热时,就应该实行跑15秒+走30秒的循环。
If you have increased the short runs to 30 sec run/30 sec walk, on a hot day you should run 15 sec/walk 30 seconds.
So, if something cycles through five wavelengths in a single second, we would just say that the frequency of that wave is five per second.
如果一个东西在一秒,内经历了五个波长,我们就说这个波的,频率是每秒5次。
I'm going to let you think about it for about thirty seconds or so.
我给大家,30秒时间。
If it takes you 1 / 60 of a second to go around once, then you do it 60 times a second.
如果转一圈要 1 / 60 秒,那么一秒就转了60圈
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