There's a whole gray market for Lego, thousands of home-based businesses.

乐高也有地下市场，成千上万的家庭型工厂。

This difference allows gray market vendors to price their products lower than Apple, while still earning a profit, Sun said.

两国市场的差价使得水货渠道商可以以低于苹果官方价格出售苹果产品，并专区差价，孙说。

But 49% those devices were sold through China's gray market, where products are bought from overseas and then resold by local vendors.

但是其中的49%是销至水货市场。在水货市场，产品由国外引进然后再由本地渠道商销售。