Winter spas are now the best choice for serious R & R.
要想真正休息放松,冬季温泉是当下最佳的选择。
But now notice, I can substitute now for this v squared, I can substitute the square of this that is the orbital speed and then I get M G over R.
现在注意我能,代替这个v平方,我能代入这个平方,那是轨道速度,然后得到MG在R上。
A But I tend to use P Q R for sentences and A for A, now that I have explained it, that should be smaller case.
但是我喜欢用P,Q,R来代表句子,A就代表,我已经解释了,应该是小写的。
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