“涂鸦”造句

新老建筑上都有密密麻麻的涂鸦。
Buildings old and new are thickly covered with graffiti.

他们都是在一起涂鸦时互相熟识的。
They all bonded while writing graffiti together.

他的签字是令人看不懂的涂鸦.
His signature was an incomprehensible scrawl.