These nonporous surfaces paint badly with a brush.是什么意思？

These nonporous surfaces paint badly with a brush.

这些无孔的表面很难以刷子上漆。

these

adj. 这些的；pron. 这些；

例句
There's lots of money about these days for schemes like this.
近来这类计划资金充足。

nonporous

n. 无孔的；

例句
These nonporous surfaces paint badly with a brush.
这些无孔的表面很难以刷子上漆。

surfaces

n. 面( surface的名词复数 )，水面，外表，（家具的）顶面；

例句
This machine is designed to save you effort, and keep your work surfaces tidy into the bargain...
这种机器既省力，又能保持工作台面的整洁。

paint

n. 颜料，涂料，绘画作品，胭脂等化妆品，色彩，装饰；vt. 涂色于，绘画，（用语言，文字等）描写，擦脂粉等；vi. 描绘，绘画，化妆；

例句
The cracks are showing in the walls and a lick of paint would not come amiss.
墙面开始出现裂缝了，刷一点油漆就能补好。

badly

adv. 非常，在很大程度上，坏，拙劣地，不利地，有害地；

例句
He was badly concussed, the glass leaving two angry cuts across his forehead.
他遭受了严重的脑震荡，脑门上留下的两道被玻璃划破的口子已经红肿。

with

prep. 和，跟，随着，关于，和…一致；

例句
A waiter entered with a tray...
侍者端着托盘进来了。

brush

n. 刷子，画笔，灌木丛，小冲突；vt. 刷，掠过，擦，轻触；vi. 刷，擦过；

例句
Talk to a friend who will really listen and not brush aside your feelings...
和一个能真正倾听你诉说并重视你感受的朋友谈谈。