Yaks have many uses. Their dung fuelled the fires of the nomads who once roamed the largely treeless Tibetan plateau. Yak milk is turned into butter, yoghurt and extremely hard dried cheese; the butter is burnt as lamp oil, used in tea or smeared on the face as a cosmetic.
犛牛有很多用途。以前，在基本上找不到樹木的青藏高原上游牧的牧民曾將犛牛糞用作生火材料。犛牛奶可以製成酥油、酸奶和極硬的幹乳酪；酥油可用作燈油，也可加入茶中飲用或當作化妝品塗在臉上。
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