I don't know about that, but I do know that Sentences Are More Successful When Upper and Lower Case Are Used Properly. 对此,我不太了解,我只知道,在大小写字母正当使用的情况下,句子的效果更好。
It's not path independent either by the way because, see, if I go from here to here along the upper half circle pi or along the lower half circle, in one case I will get pi. 它不是路径独立的,顺便提一下,如果我从这到这,走上半圆,或者走下半圆,一种情况下,我得到。