A writer is someone who can make a riddle out of an answer.

从n对观测值的样本中获得的相关系数的可能误差是sqrt((1-r²)/(n-2))。

成功来自于赋予人们像所有者一样思考和行动的能力。

If you plan on being anything less than you are capable of being, you will probably be unhappy all the days of your life.

文化相似性和差异的解释必须在生活的物质条件中寻找。

金钱是战争的命脉。