世界屋脊 [ㄕˋ ㄐㄧㄝˋ ㄨ ㄐㄧˇ; shi4 jie4 wu1 ji3] the roof of the world usually refers to Tibet or Qinghai-Tibetan Plateau 青藏高原[ㄑㄧㄥ ㄗㄤˋ ㄍㄠ ㄩㄢˊ; qing1 zang4 gao1 yuan2] ◄ ►