So protean are its forms and so varied its features that even specialist prognoses of aggressiveness, invasion and response to treatment have typically generated more exceptions than rules.
它的种类千变万化，特征形形色色，就连专科医生对其是否有蔓延性和侵袭性都无法确诊；而且它对治疗的反应也无规律可循，常常出人意料。
The most famous Da Long Pool is more than 190 meters high, which is seldom seen in the world, and its dignified vigor and varied forms surprise all the visitors.
最为闻名的大龙湫，瀑高190馀米，为世界少有，其磅礡的气势和多变的形态，令人叹为观止。
The most famous Da Long Pool is more than 190 meters high, which is seldom seen in the world, and its dignified vigor and varied forms surprise all the visitors.
最为闻名的大龙湫，瀑高190馀米，为世界少有，其磅礡的气势和多变的形态，令人叹为观止。
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