The writing's on the wall 不祥预兆
Street art is very visual, and often created in public spaces. Sometimes it is called 'graffiti'. In the past, graffiti was often associated with vandalism, but the public have now become more receptive to creative graffiti artworks. Several street artists have in fact reached international stardom.
在英语里，the writing's on the wall 可以用来比喻不好的事情即将发生。比如，有人要被裁员了、公司要倒闭了等倒霉的事情。
Susie saw the writing on the wall and decided to quit before her company was taken over by the administrators.
I should have seen the writing on the wall when I bought my house. It's falling apart and now I have to spend a fortune renovating it.
在美式英语中，人们常说 the handwriting's on the wall, 意思与 the writing's on the wall 相同。