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.
牦牛有很多用途。以前，在基本上找不到樹木的青藏高原上游牧的牧民曾將牦牛糞用作生火材料。牦牛奶可以制成酥油、酸奶和極硬的干奶酪；酥油可用作燈油，也可加入茶中飲用或當(dāng)作化妝品涂在臉上。
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