“We often remark on how healthy or unhealthy someone looks, but it can be very difficult to say precisely how we know this, ” said lead researcher Vinet Coetzee.
主要研究人员Vinet Coetzee说：“我们经常评论某人多么健康或多么不健康，但很难详细说出健康与不健康的界定。”
“We often remark on how healthy or unhealthy someone looks, but it can be very difficult to say precisely how we know this, ” said lead researcher Vinet Coetzee.
主要研究人员Vinet Coetzee说：“我们经常评论某人多么健康或多么不健康，但很难详细说出健康与不健康的界定。”
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