怎么理解at some point something must have come from nothing

怎么理解at some point something must have come from nothing where must the puma have come from,怎么翻译,有的说 must have done,可 where must the puma have come from? something must be done to prevent some students from froping MAKE SOMETHING FROM NOTHING BEAYTIFUL Without nothing,you cannot have something 这句话怎么翻译? where must the puma have come from 其中must have done是什么用法? point something at someone什么意思 point something at someone（同义词）a__________________ I must have done something right.这一句应该怎么翻译? point at怎么读 come to anything/something/nothing是什么意思?