山寨用英文怎么说

华尔街日报直接用shanzhai，

跟老外聊天有对方用copycat，

也有knockoff，n. (售价低廉的)冒牌服装;名牌仿制品。
A knockoff is a cheap copy of a well-known product. (INFORMAL)
E.g. Frilly dresses are out; Chanel knockoffs are in...
You can buy a nice knockoff watch from them.

pirate应该是盗版，

也有口语里用rip-off

山寨 copycatting
This Chinese term literally refers to the mountainstrong holds of bandits. First borrowed to describe rip-off products,it has evolved to refer also to homemade products, such as video parodies of movies。

从上文中可知道，山寨可有好几个对应的英文单词。首先是我们最常见的copycat 抄袭，其次是bandits 盗版，再次是rip-off（products）剽窃，最后是homemade（products）国产。根据情况选择吧。