| 释义 |
free fall 英/ ?fri? f??l / 美/ ?fri? f??l / - 自由落体：在重力场中没有限制的运动状态，也可以指这种运动状态本身。
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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
When we finally fell sleep on the boats each evening, even though the beds were hard, it really felt like stress-free living! 每天晚上，当我们终于在船上入睡时，尽管床很硬，但真的感觉生活毫无压力！ - 3
The cost, too, fell, because slag is free, whereas clay costs money.
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