威尔逊教授解释说，该仪器是利用加速计来测量人体活动，大小和一块手表差不多，只要佩戴在腰带上或手腕上就可以记录一个人了。
Professor Wilson explained that it uses detect body movements and is little bigger than a watch, can be simply worn on a belt or the wrist to record information about the way a person walks.
威尔逊教授解释说，该仪器是利用加速计来测量人体活动，大小和一块手表差不多，只要佩戴在腰带上或手腕上就可以记录一个人了。
Professor Wilson explained that it uses detect body movements and is little bigger than a watch, can be simply worn on a belt or the wrist to record information about the way a person walks.
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