Pretty soon, we could tell that they were successfully mind-wandering, because they pressed the button when that face was upside down.
خیلی زود متوجه شدیم  با موفقیت حواس خودشون رو پرت کردن چون وقتی چهره‌ی سر و ته می‌اومد دکمه رو فشار می‌دادن.