A consumer always sends the same message structure to the "pipe" brick, which is a proxy to the real service.

消费者总是向“管道”单元发送相同的消息结构，“管道”单元是真实服务的代理。

youdao

Under the messaging paradigm, Proxy is mainly responsible for forwarding the input message to the real subject.

在消息传送范式下，Proxy主要负责将输入消息转发到真实主体。

youdao

This approach has been independently proven to be a leading-indicator of behavior and, axiomatically, since more positive consumer behavior should produce more returns on efforts, can provide marketers with a real proxy for ROI.

FORBES: A Non-Cynical View of Return On Investment

Google Chief Economist Hal Varian has shown that search can act as a proxy for purchasing intent in markets like autos and real estate.

FORBES: Eduardo Saverin Jeopardy for Zuckerberg as Oscars Beckon for The Social Network

Using the Goldman Sachs Commodities Index as a proxy for the costs of mining (because it is heavily weighted towards industrial commodities), the real cost of mining gold jumped by nearly 50% during this period, explaining why gold stocks did not provide the leverage that gold investors expected.

FORBES: Gold Mining Stocks Are An Increasingly Attractive Opportunity