If you monitor the heart rate, breathing, and perspiration of a group of people who are watching three different movies, you probably couldn't tell who was watching the grisly horror movie, an angry fight, or a hot sex scene.

如果你监测一群正在观看三部不同电影的人的心率、呼吸和出汗，你可能无法分辨谁在看可怕的恐怖电影、愤怒的打架或火辣的性爱场景。