我们在班加罗尔的课题组正努力将最高级超薄手机上的现有微型照相机转而应用于燃气轮机的内部检查！

Our group in Bangalore is taking miniature cameras developed for state-of-the-art ultra-slim mobile phones and using them for the inspection of gas turbines!

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）。

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.