That's to remove any of the bugs, dirt, dust, bird droppings, anything you get on it.

这会去除所有的虫子、泥土、尘土、鸟粪以及上面粘着的所有其他东西。

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Bird droppings are the chief export of Nauru, an island nation in the Western Pacific.

鸟粪是西太平洋岛国瑙鲁岛最便宜的出口产品。 。

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He has spent a good part of his life collecting bird droppings and testing them for signs of influenza.

他花费了他一生中的很大一部分时间收集和研究鸟粪来寻找禽流感的标本。

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Some unusual streaks on the right wing were thought to be bird droppings.

BBC: NEWS | Americas | Discovery docks after 'backflip'

The birds of prey have been brought in after library users complained of having to avoid bird droppings in the courtyard.

BBC: Hawks to scare pigeons at Swindon library

The nest was daubed with white paint in an attempt to imitate bird droppings, so the birds would think it was an established nesting site.

BBC: Osprey moves into man-made nest