起源

• The colorado river rises in the rockies and flows southwest into the gulf of california .
  科罗拉多河起源于落矶山脉，朝西南流入加利福尼亚湾。
• We must conclude from the work of those who have studied the origin of life .
  根据那些研究生命起源的人们所作的工作，我们必然得出这样的结论。
• Further study is needed before the origin of the covalent bond can be considered a settled question .
  需进一步深入研究方能解决共价键的起源问题。
• Each of these life-sustaining agents begins as a stem cell, a sort of hematological embryo .
  这三种维持生命的要素都起源于干细胞。干细胞是血液的胚胎。
• The origin of vertebrates and their ancestry are problems still obscured by too few facts .
  脊椎动物的起源和它们的始祖问题，由于事实太少仍然不很清楚。
• Volta succeeded in producing a simple form of cell which is the parent of modern batteries .
  沃尔塔成功地制造了简单的电池，这种电池就是现代电池的起源。
• These discoveries have raised new questions concerning the origin and distribution of early mammals .
  这些发现提出了有关早期哺乳动物的起源与分布的新问题。
• The internal lamellae originate from an invagination of the inner of double membrances that surround the plastid .
  片层起源于围着质体双层膜的内膜向内折伸。