Consider Listing 2, which demonstrates this alternative approach to produce output equivalent to Listing 1.

考虑清单2，其中演示了生成与清单1等效的输出的替代方法。

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Effective round-tripping ensures that the input and output documents are identical (semantically equivalent).

有效的往返保证输入和输出文档是相同的(语义等价)。

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The context information establishes an execution environment that affects the output of a service for the equivalent input.

上下文信息建立了影响等效输入的服务输出的执行环境。

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That might be about to change, though, as South Korea's state-owned Korea Electronics Technology Institute has announced a new image sensor chip that promises to take "vibrant photos" in extreme low-light conditions -- all the way down to 1 lux, which is the equivalent light output of a candle shining one meter away.

ENGADGET: South Korean image-sensing chip enables 1-lux photography

That's about 1.5% of total U.S. electricity consumption, more than the electricity used by American televisions, or equivalent to the output of about 15 typical power plants.

FORBES: Magazine Article

The government says that a pyre's output is equivalent only to that produced by two bonfire nights.

BBC: Foot-and-mouth pyres: Dioxin danger?