free flow of trade

基本解释

Reciprocity is the bedrock principle of the free flow of trade and investment that the U.S. has long urged China to embrace.
互惠互利是美国一直以来敦促中国接受的贸易投资自由流动的基本原则。
Both these sets of ruins have a vital political significance for the present, for they indicate a region without hardened borders that benefited from the free flow of trade and information.
对于当今而言，上述两个遗迹都有着真实的政治借鉴意义，正因为他们对于地区的认同不依赖明确的边界，因此从贸易和信息的自由流动方面获益良多。
Tariffs and quotas are the two major forms of trade restrictions ( or protectionism ), which interfere with the free flow of trade among nations.
关税和配额是贸易限制（或保护主义）的两种主要形式，它们干预了国家之间的自由贸易。

I'll be traveling to Australia to celebrate the 60th year of the American-Australian alliance, and that will signify the security infrastructure that allows for the free flow of trade and commerce throughout the region.
WHITEHOUSE: President Obama at the APEC Business Summit
The World Trade Organisation, which oversees the free flow of physical trade, might be a suitable body for keeping digital goods and services flowing too.
ECONOMIST: Regulators are having to rethink their brief
In December, international negotiators halfway around the world from each other debated provisions that would impact the free flow of information online and trade.
FORBES: WCIT, TPP, Russia PNTR: Growing Recognition of Internet Freedom As A Trade Issue