「山寨品」英文怎么说？

counterfeit goods 

假冒商品

a knockoff (plural : knockoffs)

（贵重物品/名牌的）廉价仿制品、假冒商品、山寨品、山寨货

Alibaba spends more than 100 million yuan a year to fight counterfeit goods. 

阿里巴巴每年都花费过亿元去打击伪冒商品。

I'm already poor as a church mouse, even knockoffs look expensive to me.

我已经穷到要吃土了，就算山寨货对我来说还是很贵呀。

According to the SAIC, up to 63% of the goods sold on Taobao are knockoffs.

根据国家工商行政管理总局指出，在淘宝所出售的商品，高达百分之63的都是山寨品。

*SAIC ~ The State Administration for Industry and Commerce