They find dirty surfaces and paint them with images or messages using cleaning brushes or pressure hoses.

街头艺术家们找到肮脏的表面，用清洁刷或高压水枪绘画出图像或传达信息。

It has a cleaning brush, that's nice.

有清洁刷， 不错。

And normally, what you need is a brush to scrub, not a toothbrush, but, you know, a cleaning brush or what you can call a scrubbing pad.

通常情况下，你需要的是一把刷子，而不是一把牙刷，但是，你知道，是一个清洁刷，或者你可以称之为擦洗垫。