In 1665, 93% of the people that died in that year died of infectious diseases.
在一六六五年死亡的总人数中,百分之九十三都是死于感染性疾病
At the top of the list is Niger, with 77% of males, 93.6% of females, we see the population, in terms of Gender, 86% of the adult population is illiterate.
位于最前列的是尼日尔,77%的男性以及93,6%的女性是文盲,而忽略性别看整体人口,86%的成年人是文盲。
It just turns out that if you put the v^2 and you put the r, and r is 93 million miles, you will find the acceleration is small enough for us to ignore.
这样的话,如果你把 v^2 和 r 代进去,r 是 9300 万英里,你会发现加速度小得足以被忽略
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