起源

• The origin of this nation is wrapped in profound mystery .
  这个国家的起源似乎奥秘莫测。
• Sacrifice had a double origin .
  献祭有双重起源。
• Fungal-decay can, in fact, originate within the standing tree .
  菌腐朽可起源于立木阶段。
• It originated on american soil .
  它起源于美国。
• Thus we find that they, too, arise from an epithelium .
  因此我们发现，它们也起源于上皮组织。
• It has been difficult to ascertain the correct source of origin .
  要查实材料的正确起源很困难。
• Men descended from apes .
  人起源于猿猴。
• The origins of structural theories are eclectic at best .
  结构主义理论的起源充其量也不过是折衷主义。
• The beginning of libraries came after the end of the prehistoric era .
  图书馆起源于史前时代结束之后。
• From this source there stemmed major new branches of mathematics .
  由此起源产生了数学的一些主要新分支。