根据研究员桑尼·松皮的说法，狗也许已经学会了检测来自人类的威胁信号，并且通过努力讲和来回应。
Dogs may have learned to detect threat signs from humans and respond by trying to make peace, according to researcher Sanni Somppi.
一旦用户登录成功，便不再想看到它了，所以当它检测到用户已经成功通过验证，它就按照默认设置变为不可见。
Once the user logs in, you don't really want to see it anymore, so by default it disappears when it detects that an authenticated user is already present.
外科医生可以利用这种手段来核实自己是否已经成功彻底地切除了肿瘤；而化疗专家也可以通过检测癌细胞是否重新出现来确定治疗的效果。
A surgeon could check if he had successfully removed all of a tumor, and chemotherapists could monitor the success of any treatment by testing for the reappearance of cancer cells.
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