Current normal background exposure is not expected to affect human health on average.

目前，正常环境的接触总体上不会影响人类健康。

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Due to the omnipresence of dioxins, all people have background exposure and a certain level of dioxins in the body, leading to the so-called body burden.

由于二恶英普遍存在，因而所有人都有接触的环境且身体里都有一定程度的二恶英，也就产生了所谓的机体负担。

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Motion during the long exposure produced streaks in the starry background and the city lights on the darkened planet below.

在长时间曝光中的运动在星光熠熠的背景和下方变暗了的城市灯光上产生了条纹。

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The iA Plus mode lets users adjust the defocusing area in the background, exposure compensation and white balance for more flexible control.

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Persistent tap-to-track also adjusts the camera exposure depending on any movement, helping avoid under- or over-exposure of the image's subject or background.

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The result is expressive background defocusing and sophisticated bokeh, plus the flexibility to use short, blur-free exposure times in low light.

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