Late autumn and winter dust storms are rare.

深秋和冬天的沙尘暴是罕见的。

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Since we’re inside with doors and windows closed for most of the winter it’s important to keep the furnace filters clean and clear of dust and other debris.

因为在冬天的大多数时候都会紧闭门窗，所以保持暖气过滤网干净、清洁、没有灰尘和碎石是很重要的。

youdao

Since we're inside with doors and Windows closed for most of the winter it's important to keep the furnace filters clean and clear of dust and other debris.

因为在冬天的大多数时候都会紧闭门窗，所以保持暖气过滤网干净、清洁、没有灰尘和碎石是很重要的。

youdao

This shut out the sun, causing decades of continuous winter sufficient to trigger an advance of ice sheets that, even when the dust cleared, kept the climate cool for more than a thousand years, at least in the Northern Hemisphere.

WSJ: Matt Ridley on New Support for a Global-Cooling Theory | Mind & Matter