In some sense that duck droppings is a kind of resource instead of pollution.
从某种意义上来说，鸭粪不是一种污染物，而是一种资源。
On the road there is little to protect them from mud, insects, and bird droppings.
在路上，几乎没有东西去保护他们免遭泥土、虫和鸟粪的侵袭。
On the road there is little to protect them from mud, insects, and bird droppings.
在路上，几乎没有东西去保护他们免遭泥土、虫和鸟粪的侵袭。
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