在这项研究中，研究人员比较了近2000万成年人的身体检测结果。
For the study, the researchers compared the body measurements of almost 20 million adults.
医生会进行身体检查、面谈和实验室检测排除这些可能性。
A doctor can rule out these possibilities by doing a physical exam, interview, and lab tests.
体检和体检历史：对于身体的一个检查目的是检测身体的总体健康体征，包括检测是否有疾病的迹象，如肿块或其它看似不正常的情况。
Physical exam and history: an exam of the body to check general signs of health, including checking for signs of disease, such as lumps or anything else that seems unusual.
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