A number of street artists around the world have started expressing themselves through a practice known as reverse graffiti.

世界各地一街头艺术家已经开始通过做一种被称为反向涂鸦实践，来表达自己想法。

And you're like amazed because you're seeing this incredible graffiti.

你很惊讶，因为你看到了这难以置信涂鸦。

Here goes some more paintbrushes for you, taking the graffiti off them buildings.

这里有更多画笔给你，把建筑物上涂鸦去掉。

Now there is graffiti everywhere, even here in the school sometimes!

现到处都是涂鸦，有时甚至学校！

Some tourists write graffiti on prison walls at S-21 in Phnom Penh.

一游客金边 S-21 监狱墙上涂鸦。

Nowadays, there are four general sorts of graffitigang graffiti, socio-political graffiti, expressive or humorous graffiti, and public art.

如今，街头涂鸦大致可分为四大类：帮派涂鸦、社会政治涂鸦、富有表现力或幽默涂鸦以及公共艺术。

A third characteristic of hip hop culture is graffiti writing.

嘻哈第三个特征是涂鸦。

The walls of Pompeii are covered in graffiti  – and it's not from thoughtless tourists.

4. 庞贝古城墙壁上满是涂鸦——这可不是漫不经心游客所为。

So our goals for this little graffiti are no kissing, no overlaying lines, and we want to be very observant.

所以我们对这个小涂鸦目标是没有接吻，没有重叠线条， 而且我们希望非常细心。

And big cities have graffiti and they got a lot of kids, you know, 14-year-old kids or whatever with spray paint cans running around.

大城市有涂鸦，他们有很多孩子，你知道，14岁孩子或其他什么，带着喷漆罐到处跑。

However, it is not the usual type of graffiti with paint from spray cans being used to write on walls. It is graffiti in sand.

但不是通常所看到用喷雾罐喷出漆墙上涂写，而是沙地中。

Of course, people outside of hip hop culture generally do not like to see graffiti; certainly business owners don't want graffiti on their walls.

当然， 嘻哈之外一般不喜欢看涂鸦；企业主当然不希望他们墙上出现涂鸦。

Some people consider some graffiti to be art, and there are even some graffiti artists that have become well known for their graffiti.

有认为一涂鸦是艺术，甚至有一涂鸦艺术家因涂鸦而闻名。

Alien Ness, a pioneering B-boy born Luis Martinez, joined the Mighty Zulu Kingz in the early 1980s when breaking, along with lyricism, turntablism and graffiti, were among the distinct elements that coalesced to form hip-hop.

霹雳舞元老阿利安·耐斯原名是路易斯·马丁内斯，他20世纪80年代初加入了“伟大祖鲁国王”舞团，当时霹雳舞和说唱、转盘、涂鸦等其他独特元素一起构成了嘻哈。