Riding in a car through space, if you were to hang your white-gloved hand out the window, it would come back dirty.
坐在车里穿越太空，如果你要把你戴着白色手套的手悬在窗外的话，抽回手时手会变脏。
2
On my way home, I saw an impolite young man riding a bike quickly. At a crossing a woman was knocked down by the bike. The young man didn't make an apology and said some dirty words.