Cause: Some part of the code is descending two levels per method call without dispatching appropriately on the second descent.
起因：代码的某些部分在每次方法调用中下行了两级且第二次下行时调度不当。
If I flash it, if I strobe it - twice per second — - we call that two Hertz — so my strobe is two times per second.
如果每秒，摄像机闪两次-，我们管这个叫2赫兹-，每秒闪两次。
So it is this component, v cosine theta - which we call the radial velocity-- that is minus 100 kilometers per second.
这个成分，是vcosθ,我们叫做径向速度-,等于-100，公里每秒。
All the control group infants responded to the first or second name call at the age of one year, while 86 per cent in the at-risk group did.
所有的对照组的一岁的婴儿对第一次或第二次名字的呼唤均有反应，而风险组的婴儿只有86%反应。
All the control group infants responded to the first or second name call at the age of one year, while 86 per cent in the at-risk group did.
所有的对照组的一岁的婴儿对第一次或第二次名字的呼唤均有反应，而风险组的婴儿只有86%反应。
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