国家癌症研究所只接收来自主要位于首都的28个地点的数据。
The National Cancer Institute only receives records from 28 locations, mainly in the capital.
如果你想要了解更多像以上列出的药草补充剂的相关副作用，那么国家健康卫生研究所的数据库和网站是一个很好的资源。
If you want to learn more about the side effects of common herbal supplements like the ones listed above, the National Institute of Health's Medline Plus site is an invaluable resource.
根据美国国家标准及技术研究所的数据，面部识别程序通过照片识别人脸的错误率已经从1993年的79%降到了去年的0.29%。
According to the National Institutes of Standards and Technology the proportion of photographs which were wrongly identified by such programmes has declined from 79% in 1993 to just 0.29% last year.
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