Passing the extra parameter can increase the overhead of the function call.

传递额外的参数会增加函数调用的开销。

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Instead of e.g. passing large images through a flow, a pointer to the image in form of a file name or image id causes much less overhead in the business flow engine.

例如，不要通过一个流来处理大图像，一个以文件名或图像ID形式指向图像的指针将大大减小业务流引擎中的开销。

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But instead, from deep within the black shroud of the wife, a gurgle of laughter emerged that turned into a torrent of mirth, echoed by seabirds passing overhead.

但是相反，从那位妻子黑色的外罩下面发出了咯咯的笑声，这笑声又引发了海潮水般的一片欢笑，引得头顶上空的鸟也跟着在笑。

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People who have observed a funnel cloud passing overhead have described the sound as similar to buzzing bees or a rushing waterfall-like sound.

BBC: Funnel clouds, twisters, tornados: What are they?

He did not know anything beyond the hiss and screech of fighter planes passing overhead and the missiles falling, the bears bellowing in another part of the fortress, and the sudden silence of the birds.

NEWYORKER: The Tiger��s Wife

Light pollution can come from TV and computer screens, other electronic displays and ambient sources such as streetlights, passing traffic and neighboring buildings, in addition to overhead lighting within the home.

CNN: Unplug! Too much light at night may lead to depression