It's the mindset that says: "I know how the world works." I don't need that snake-oil salesman stuff to improve my life.
这种思维模式是：我了解整个世界的运作，我不需要买骗人的万灵油来改善我的生活。
2
Second, the laws on fraud should be sufficient to deal with the snake-oil salesmen who promise to predict, say, whether a child might be a sporting champion.
第二：反欺诈法应该对骗人的销售员保持高压态势。 比如，这些人承诺说可以预测小孩能否成为体育冠军。
3
Traditional and folk remedies are often labelled as snakeoil and witches' potions.