Check surface of EXF motor;

检查排风机电机外表面；

youdao

youdao

If it is easier to check a return value, or call an API to change a setting then go deep... and stop messing around on the surface.

如果检查一个返回值或者调用一个API来改变设置会更简单，那么就深入下去，停止在UI上浪费时间了。

youdao

When a team of Harvard researchers wanted to create the ultimate liquid- and solid-repelling surface, they looked toward the Nepenthes pitcher plant, where curious insects check in and never check out, thanks to slippery walls that lead to their tiny, horrific fate.

ENGADGET: SLIPS liquid repeller is inspired by carnivorous plants, enemy to insects and graffiti artists alike