然而，欧洲人带来的绵羊、马、山羊和猪却有着坚硬的蹄子，这压紧了稀薄的土壤并导致了水土流失。
The sheep, horses, goats and pigs brought by Europeans, however, have hard hooves, which compress the thin soil and cause erosion.
牠们是欧洲阿尔卑斯山的野山羊，它们喜欢吃坝墙上的苔藓、地衣和舔坝墙上的盐分。
They are European Ibex. They like to eat the moss and lichen which grows on the wall and they lick the salt off the dam wall too.
牠们是欧洲阿尔卑斯山的野山羊，它们喜欢吃坝墙上的苔藓、地衣和舔坝墙上的盐分。
They are European Ibex. They like to eat the moss and lichen which grows on the wall and they lick the salt off the dam wall too.
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