So the spread of agriculture could very well have a profound effect on the composition of Earth's atmosphere.

所以农业的扩张很可能对地球大气的组成产生深远的影响。

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Database tuning can have a significant effect on message throughput depending on the composition of the message flow.

根据消息流程的构成，数据库调整选项对消息吞吐量有明显的影响。

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Unless this is the effect you want, you'll either have to modify your composition, shoot it later in the day, or plan to return on an overcast day when both sides will be photographable.

如果这种阴影不是你想要的，你就得晚些时候当太阳升高一点后再来拍摄，或计划在两边都能拍摄出来的一个阴天再来。

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The effect on the composition of American families has been dramatic.

ECONOMIST: Families without kids

But the strength of the greenhouse effect depends on the chemical composition of the atmosphere, because the phenomenon is due to the absorption of infra-red radiation by various gases in the air.

ECONOMIST: Climate change: Getting real | The

Mr Freeman finds that, in practice, employment-protection laws appear to have little effect on the overall level (as opposed to the composition) of employment.

ECONOMIST: The world is not converging on a single kind of capitalism