网络解释
1. 无...的;摆脱了...的：free from 不受...影响的 | free of 无...的;摆脱了...的 | freeze over (使)全面结冰
2. free of
2. 没有：fossil fuel 化石燃料 | free of 没有 | from generation to generation世代相传
3. 无...的,免于：free from免于 | free of无...的,免于 | full of充满
情景对话
在地铁站
A：Let’s go to Wangfujing by bus.
我们坐公共汽车去王府井吧。
B：Better take the subway. It’s faster, and more convenient.
最好乘地铁，地铁更快，更方便。
A：O.K, it will be a new experience for me.
可以，这对我来说也是一次新的经历。
B：We have a rather comprehensive subway system here. You can get almost anywhere rather quickly on a subway, especially at this time of day when the traffic is heavy…
我们这儿有相当广泛的地铁系统，你可以坐地铁迅速到达任何地方，特别是在白天的这个交通高峰期……
A：Where do we pay the fare?
我们在哪里付车费？
B：Just give the man standing there 3 yuan and he’ll give you a token. Then, you slip it into the slot at the turnstile and push the turnstile to get in.
给售票员3 元，他会给你一张辅币。你在入口处那儿把辅币塞进投币孔，就能推转门去了。
A：Let me pay for it. Where can I get a subway map?
让我来付费，我在哪儿能买到地铁图？
B：Ask the worker who sells tokens to give you one. It’s free of charge. Actually maps showing subway routes are posted at most stations.
向售货员要一张，那是免费的，实际上大多数地铁站都贴有线路图。
A：Do I have to pay an additional fare to change trains?
换乘地铁时，我还要付费吗？
B：No, you don’t have to. Here comes the train.
不用，车来了。
free of的解释
A：Be careful! Subway doors open and close automatically.
小心，车门是自动开关的。
