边界贸易border trade

• 每逢集日，便有大量的越南人涌到边贸市场来。

  Every market day, large numbers of Vietnamese flock to the border markets.

• 绥芬河边贸生意占了整个黑龙江省的一半。

  Border trade in Suifenhe accounts for half of border trade in Heilongjiang province.