You can smell the guano or the bird poo in the air.

你可以闻到空气中鸟粪的味道。

It's very pungent. You can smell the guano or the bird poo in the air.

而且味道非常刺鼻。空气中都弥漫着鸟粪的味道。

These worked just as well, if not better, than guano.

这种人工肥料，就算不如鸟粪好，也不会差到哪儿去。

But guano might not have outlived its usefulness just yet.

但鸟粪并没有因此失去利用价值。

In the caves, there's a scraping of guano off the floor. That's bat feces.

洞穴里，地上有提取粪便的痕迹。那是蝙蝠的粪便。

A clue to the source of the guano can be heard above the noise of the river.

寻找鸟粪来源的一个线索是听河水上空的声响（鸟鸣）。

In the 19th century, settlers mined the island for bird guano, leaving the place mostly barren, hard coral.

19世纪，移民们在岛上开采鸟粪，留下了很多贫瘠坚硬的珊瑚。

The scientists found guano which is sometimes used as fertilizer to be crucial to the functioning of tropical ecosystems.

而此前，科学家发现，鸟粪有时候可以用作肥料，对于热带生态系统的运作至关重要。

The cave floor is covered in guano, so plentiful that 10 minutes' work can fill these farmer's baskets.

洞穴地底覆盖了满满鸟粪，仅仅十分钟时间就能让农人满载而归。

Almost immediately, the Peruvian government started huge mining operations, selling the guano to any country that wanted it.

与此同时，秘鲁政府也开始了大规模的开采活动，并向任何有需要的国家出售这种鸟粪。

It was nicknamed the 'billion dollar bird, ' because its poop, or guano, was an amazing fertilizer.

它被戏称为“十亿美元鸟”，因为它的粪便是一种神奇的肥料。

Now, sidebar, guano equals bird poop.

现在，边栏，鸟粪等于鸟粪。

It turns out, bird guano is amazingly rich with these sources of fixed nitrogen and phosphorus.

结果表明，鸟粪中含有相当丰富的固态氮和磷。

They don't really have much out there, but bat guano.

除了蝙蝠鸟粪之外，他们实际上并没有太多东西。

But Peruvian guano is especially rich because coastal Peru has a really dry climate.

但秘鲁的鸟粪特别丰富， 因为秘鲁沿海地区气候非常干燥。

But for the guano industry, it was too late.

但是对于鸟粪产业来说已经太晚了。

The reason they were discovered is because people began mining the land for bat guano.

它们被发现的原因是因为人们开始在这片土地上开采蝙蝠粪便。

Recently, the rise of organic farming has increased demand for high-quality organic fertilizers, and guano is one of the best.

最近，有机农业的兴起使得优质有机肥料的需求量增加，鸟粪则是最好的有机肥料之一。

By the 1870s, most of the guano on these islands had been already been mined.

到1870年代末，这些岛上的绝大多数鸟粪都已开采殆尽。

There are two main reasons guano is so rich.

鸟粪如此丰富有两个主要原因。