translation.en: We asked students who were walking by to participate in a study, and we took a shot with a webcam, and we asked them to fill out a survey on a laptop.
translation.zh: 我们让过路的学生们 参与一项研究， 我们用摄像头给他们照了相， 然后我们让他们在电脑上填写一张调查问卷。