translation.en: So we asked ourselves a question: what consumer product can you buy in an electronics store that is inexpensive, that's lightweight, that has sensing onboard and computation?
translation.zh: 因此我们问了自己一个问题： 你能在电子产品商店买到怎样的物品， 它既不昂贵，又很轻， 还有机载传感器和计算能力？