1. Worst of all, when her son, Ned, fell and injured his knee, she refused to pay for a doctor and spent hours looking for free medical help. 最糟糕的是，当她的儿子内德摔坏膝盖时，她拒绝请医生，而且花了几个小时寻找免费的医疗帮助。
2. The cost, too, fell, because slag is free, whereas clay costs money. 因为渣是免费的而粘土需要钱，所以成本也下降了。
3. The cost, too, fell, because slag is free, whereas clay costs money.There is, of course, the problem of customers. 成本也有所降低，因为废料是免费的，只有粘土需要用钱购买。当然，消费者是个问题。
4. While there is little China can do about its existing Treasury holdings, it can rethink past policies - and ask both how it fell into this trap, and how it might free itself. 尽管对于目前已持有的美国国债，中国几乎做不了什么，但中国可以反思过往的政策——问问自己是怎样落入这个陷阱的，以及如何摆脱。
5. THE early days of personal computing were marked by a spectacular free-for-all as companies big and small fell over one another in a mad rush to become the dominant player in a brand-new business. 个人计算机市场的早期是一场壮丽的群雄混战，一个个大大小小的公司前赴后继，争夺新产业的领军地位。
