This was just an invention from this eater's lunch thinking. I wish those in food industries who read the above post can become rich since this kind of tool will be very good for Chinese fast food market. Risk and money is yours. Fame is mine. )展开全文
通过 重力 浮力 平衡， 它 也 似乎 可以 用 在 水中。By balance of buoyancy (pron.: /ˈbɔɪ.ənsi/) and gravity, it can also be used in the water. Sea land is a dream. -- "直想在空中建房，这就是最好的材料了。" @徐忙展开全文
