If someone knew a way to make money, he wouldn't spend his time sharing it with you. He will definitely spend most of his time making money, unless "you" are how he makes money.
如果有人知道有一种赚钱的方法,他不会花时间与你分享这个方法。 他肯定会把大部分时间花在赚钱上, 除非“你”是他的赚钱方式。