According to calculation, visible channel is the main channel in detecting dust particles. Short-wave IR also has some sensitivity to dust observation.

通过计算得出可见光波段是探测沙尘气溶胶的主要通道，短波红外波段对沙尘气溶胶也很敏感。

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The channel is only a few centimeters in diameter, but that is wide enough for electrons to follow the channel to the ground in the visible form of a flash of lightning.

这个通道的直径只有几厘米，但它的宽度足以让电子以闪电这样看得到的形式随着通道到达地面。

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Small pores, visible with a magnifying glass, channel the blast into mazes of micro-chambers.

用放大镜可见的细小气孔，引导冲击波进入错综复杂的微空间中。

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Zanzibar Island, visible on clear days across the channel, is a short flight or boat ride away, and Saadani National Park, a two-hour's drive south, makes for an easy overnight excursion.

BBC: Tanzania without the crowds

Its most visible weakness is that only one national television channel gives it fair play.

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