研究员发现63家美国公司在做国际医疗旅行活动，2008年对其中的45家进行了调查。

The researchers found 63 U.S.-based companies in existence that coordinate international health care trips and got 45 of them to complete a survey in 2008.

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研究员发现63家美国公司在做国际医疗旅行活动，2008年对其中的45家进行了调查。

The researchers found 63 U. S. -based companies in existence that coordinate international health care trips and got 45 of them to complete a survey in 2008.

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另外，确保你在旅行时买了正确的医疗保险，这样，你在旅行中生病或受伤时，就能得到治疗。

Also, make sure you travel with proper medical insurance, so that if you are sick or injured during your travels, you'll be able to get treatment.

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