解释:人有知识,犹如树木有枝叶,树木有了枝叶,能带给人阴凉,人有了知识,就可以为人民做更多的事。
在没有其他信息的情况下,参数的最佳估计是其样本值。
"The only way to learn mathematics is to do mathematics."
It takes character to sit with all that cash and to do nothing.I didn't get to the top where I am by going after mediocre opportunities.