QR codes promise marketers a simple way to ad digital elements to old-line advertisements and potentially track consumers in the physical world they way they can online.
市场营销人员利用二维码，可以轻易地在在线广告中增加数字元素，并能像在线一样，在现实世界中追踪消费者。
Conclusions: Waist circumference is a potentially modifiable risk factor for low testosterone and symptomatic AD. Manifestation of symptoms may be a consequence of generally poor health status.
结论：对于低睾酮和症状性雄激素缺乏症来说，腰围是潜在的可变性风险因子。一般身体状况差可能会导致这些症状的出现。
A new study confirms that anesthesia is safe for normal mice but potentially harmful for mice with genetic risk factors for Alzheimer's disease (AD).
一项新研究证实了麻醉对于正常小鼠来说是安全的，但是对于有AD遗传危险因素的小鼠是有潜在危险性的。
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