The barriers in water use rights system implement and water use rights trading are different.

在水权建立和水权交易中障碍和交易成本存在差异。

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The Volcker rule on the table in the us, which would split proprietary trading from trading for customers, is a step towards rebuilding some barriers.

美国正在讨论的沃克尔规则(Volcker rule)将把自营交易和代客交易分开，向着重建部分篱障迈出了一步。

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The WTO, UNCTAD, World Bank and OECD continue to monitor progress countries have made in reducing tariffs and liberalizing trading systems, including reducing entry barriers in key sectors.

WHITEHOUSE: The Los Cabos Growth and Jobs Action Plan

Stock exchanges around the world have been partnering or merging with other platforms to save cost and compete better against the newer electronic exchanges, which are reducing the barriers to entry for trading.

FORBES: CME Group Shows Restraint By Not Launching NYSE Bidding War With Deutsche Boerse

Robert Greifeld, Nasdaq's chief executive officer, said the deal was long in coming and gained purpose with the passage of new regulations last month that encourage electronic trading and seek to eliminate the barriers between competing markets.

FORBES: Not So Fast, Big Board