1·They all bonded while writing graffiti together.
他们在一起涂鸦时相识。
—— 《柯林斯英汉双解大词典》
2·Recently, there has been a trend towards writing graffiti on freight trains.
最近很多人又开始了货运列车的涂鸦。 。
3·As long as we've had walls and writing, we've had graffiti.
自从我们有了墙壁和书写以来，我们就有涂鸦。
4·Graffiti refers to any form of drawing or writing on public Spaces, usually you will find graffiti scribbled on the walls of buildings, on trains or on buses.
涂鸦是指在公共场所，通常在建筑物的墙壁上，火车或公共汽车涂的画或写的字。