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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This paper discusses several common problems in the application of engineering budget quotas.

本文就建设工程预算定额套用中几个常见的问题进行了探讨。

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Previously, aggregating quotas from multiple individuals was a common technique that grey-market money changers used to obtain large sums of foreign exchange.

以前，灰色市场的货币兑换者经常把多个个人的购汇额度汇集起来，靠这种手段来获取大量外汇。

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On Wednesday the European Commission unveiled major proposals to reform the Common Fisheries Policy (CFP) to end the system of catch quotas that encourages fishermen to dump fish back into the sea.

BBC: Government welcomes EU fisheries reform