There were trackwheels, then rubber balls - which allowed smoother movement, but got gummed up with dirt - and now mini-cameras that film the table top.

先是有了滚轮鼠、然后橡皮球-可允许更平滑地移动，不过容易粘上污垢-现在有了给桌面拍照的微型照相机（译者：指光电鼠标）。

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In the middle of the room was an examining table with a rubber mat on top.

房间中间放了一张检查台，台子上有一个橡胶垫。

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Bo-Bo:Whose rubber is it on the table?

桌子上是谁的橡皮擦？

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RIBA-II accomplishes this task using newly-developed Smart Rubber sensors (Table 1, Figure 2, 3), the first capacitance-type tactile sensors made entirely of rubber.

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On the bottom are three rubber feet that keep the ACU firmly in place on a table and a belt clip (a humorous addition given its large size).

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