Nanobubbles do the softening, tinting and stonewash without the stones, all at once, Silla said.
“纳米气泡在没有石头的情况下进行软化、着色和石磨,”新罗说。
宋飞正传第二季
What about stonewashing? You ever witness one of those?
用石头洗衣服呢? 你见过吗?
英语百科
Stone washing
Stone washing is a textile manufacturing process used to give a newly manufactured cloth garment a worn-in (or worn-out) appearance. Stone-washing also helps to increase the softness and flexibility of otherwise stiff and rigid fabrics such as canvas and denim.