The system first establishes a baseline for an approaching individual, then flashes the potentially stimulating image on a screen or wall in the subject's eyeline.
当一个人走近时，该系统首先为之设置一个基线，然后在主体目力所及的屏幕或墙上闪现可能富有刺激的图像。
2
If the baseline changes in a way that is suspicious, the individual can be ushered away for further questioning.
如果基线发生了可疑的变化，就把这个人带走进一步进行盘查。
3
Yes, people are measurably happier after they've just won, but six months down the line they're back to their individual 'baseline' level of happiness.