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
