慢速英语:E-Cigarettes Safer, But Not Risk Free

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短语讲解：

1. Most of the calls are from people worried about children who have played with the devices.

worry about 担忧， 烦恼
例句：If not, don't worry about it.
如果没有，也别担心。

2. Meaning, the U.S. federal government does not control e-cigarettes even though they contain liquid nicotine.

even though 即使，纵然
例句：Even though it had a limited run, don't despair.
即使供应时间有限，你也不要绝望。

3. Mr. McAfee explains that nicotine poisoning happens when the substance gets into the skin, gets into the eyes or is swallowed

get into 进入; 陷入
例句：It is easier to get into debt than to get out of debt. 
负债容易还难。 

4. E-cigarettes do not contain hundreds of harmful chemicals that are found in real cigarettes.

hundreds of 好几百，许许多多
例句：Hundreds of families lived there together.
好几百户人家都一起住在那里。