translation.en: Now, this is a rear-projected drafting table. It's about 36 inches wide and it's equipped with a multi-touch sensor. Normal touch sensors that you see, like on a kiosk or interactive whiteboards, can only register one point of contact at a time.
translation.zh: 现在注意，这是一张从背面投影的工作台。它大约36英尺宽， 配备有一个多点触摸感应器。现在注意，一般你们看到的触摸感应器， 好比在自动终端机或交互白板上， 只能一次注册一个接触点。