Quotas or quantitative restrictions are the most common form of non - tariff barriers.

配额或者说数量限制是最常见的关税壁垒.

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Trade barriers usually consist of tariff restrictions and non - tariff barriers.

贸易壁垒通常包括关税壁垒和 非 关税壁垒.

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Technical barriers to trade ( TBT ) are major non - tariff barriers in the international trade area.

技术性贸易壁垒是当前国际贸易领域一项重要的 非 关税壁垒措施.

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Addressing barriers to trade and investment in environmental goods and services, with a particular non - tariff barriers.

解决有关环保商品和服务的贸易和投资壁垒, 尤其 是非 关税壁垒.

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