guano

1. Between 1840 and 1880 , guano nitrogen made a vast difference to european agriculture .

1840至1880年之间，富含氮的鸟粪石对欧洲农业产生了巨大的影响。

2. Japan points to 19th century use on the island to collect seabird feathers and guano .

日本则指出19世纪他们到此岛上收集鸟毛和鸟粪。

3. By the 1900s traders had stripped the guano penguins hid their eggs in and the birds have had to lay them on bare ground exposed to scavengers .

上世纪初，贸易商将企鹅用来藏匿蛋的鸟粪全部铲尽，这些可怜的鸟类只能将卵产在光秃秃的地面上，让食腐动物捡了便宜。

4. By the early 1900s guano deposits tens of feet deep had been scraped to bare rock and southern right whales had been hunted almost out of existence .

到二十世纪早期，原本厚达几米深的鸟粪堆积层被挖得只剩光秃秃的岩石，南方露脊鲸也被捕杀得近乎灭绝。

5. In the dry uplands of chile , rich mineral nitrate deposits were then found , and gradually took the place of guano in the late 19th century .

人们在智利干燥的高地发现了丰富的硝酸盐矿藏，并在19世纪后期逐渐取代了鸟粪石。

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