天花本身具有防静电功能,所以其表面是不会沾染尘埃,护理只需定期用清水轻抺即可(一般每月一次)。
Smallpox has anti-static function, so the surface is not contaminated with dust, just regular nursing with water to wipe light (usually once a month).
在水泥路面施工时,应用塑料膜将井盖盖好,以防止水泥浆沾染表面,损伤表面花纹、字迹。
In the cement pavement construction, application of plastic cover, to prevent contamination of the surface damage of cement slurry, the surface pattern and writing.
这项研究发现,五秒钟定律有一定道理,食物同表面接触时间越长,沾染的细菌就会越多。
The research found that the five-second rule has some validity in that longer contact times resulted in transfer of more bacteria.
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