There is crack between every key-press on clavier, accumulate dirt easily, at ordinary times the surface can be brushed, can seam to Ga La seam the bilge bacterium in often helpless, so, a lot of people are disinclined to be in charge of.

• 键盘上每个按键间都有缝隙，轻易积灰尘，平时表面可以擦擦，可对旮旯缝缝里的污垢细菌往往无能为力，所以，很多人都懒得去管。