Getting your mouth washed outwith soap is supposed to be punishment, so what is it doing in toothpaste?

直接用肥皂清洁嘴巴是一种惩罚，那么牙膏中含有的肥皂是如何清洁牙齿的呢？

And if Cola is such an effective cleaner of corroded metal , what is it doing to the inside ofyour stomach?

如果可乐能有效清洁金属锈斑，那么可乐对人体的胃会产生什么影响呢？

Why didn't the Fed do better at bank oversight before the crisis? And what is it doing differently?

美联储在危机之前为什么没有更好地监督银行？现在这方面有什么改革？