If you want to help to prevent the tragic fact that, each year, thousands of babies are born to drug-addicted mothers, you can contribute to a charity that uses a market mechanism to ameliorate the problem: a $300 cash grant to any drug-addicted woman willing to be sterilized.
如果你不忍看见每年有数千名婴儿由吸毒妇女生下的悲惨事实，就可以捐款给一个利用市场机制来缓解这一状况的慈善组织：他们向每个愿意接受绝育的吸毒妇女支付300美元。