The best way to find out if you can trust somebody is to trust them.
了解一个人是否值得信任的最好方法就是去信任他们。
两个物体的相互作用力总是大小相等,方向相反,同时出现或消失且作用于同一直线上。
In auctions, the rules determine the outcome as much as the bidders' strategies.