Unfortunately this early plant experienced the problem common to many forms of renewable energy: the flow in the Wey River was unreliable, and the waterwheel was soon replaced by a steam engine.

不幸的是，这个早期的工厂遇到了许多可再生能源形态都遇到的问题：韦河的水流不稳定，而水车很快就被蒸汽机取代了。

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This is difficult to predict in advance and is best to identify it with early testing of the actual message flow.

预先预测它是困难的，最好在实际消息流程的早期测试中把它搞清楚。

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The test client provides a neat way of defining and saving test data, which is most useful when performing early message flow functional testing.

测试客户端为定义和保存测试数据提供了一种简洁的方式，在执行早期的消息流功能测试时，它最有价值。

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House of Representatives as early as Friday, the unusual multi-year plan is aimed assuring a dependable flow of Washington support to the economically hard-pressed Pakistani government.

VOA: standard.2009.09.24

The numerous substitutions disrupted the pattern of play and Portugal's early flow petered out.

BBC: Scots sink in Portugal

Saints began their task with real purpose, with centre James Downey and fly-half Stephen Myler controlling the early ebb and flow from midfield, despite two worrying line-out steals by Castres.

BBC: Castres 12-23 Northampton

Goldstein said the site was cash-flow positive early on but has been reinvesting profits to grow.

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