不同用户之间的传统水权交易可能会带来第三方影响，因为这会减少中间流和下游的入流。

Traditional water right trading between different users may bring third-party effects as reducing the instream flow of the intermediate stream and downstream.

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但是，Twitter的下游流量中仅有不足10%是导向交易类网站(即旅游、商务和财经网站以及在线零售商)。

But only less than ten per cent of Twitter's downstream traffic is sent to transactional websites (i.e. travel, business and finance sites, plus online retailers).

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精细化专业服务——专业化的会展服务，促进上下游厂商的多元化交易。

Fine professional services - professional exhibition services, promote the diversity transaction of upstreamdownstream enterprises.

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