vital process

相關句子：

1. The complex of physical and chemical processes occurring within a living cell or organism that are necessary for the maintenance of life. In metabolism some substances are broken down to yield energy for vital processes while other substances, necessary for life, are synthesized.
   新陳代謝維持生命所必需的，發生於存活細胞中或生物體中的物理和化學過程的總和。在此過程中，一些物質被分解從而為生命過程提供能量，而另一些維持生命所必需的物質則被合成