離解（作用）在物理狀態(tài)下，如在壓力或溫度下的變化，或在溶劑的作用下，使分子分離為更簡(jiǎn)單的一組原子、單原子或離子的化學(xué)過(guò)程
The chemical process by means of which a change in physical condition, as in pressure or temperature, or the action of a solvent causes a molecule to split into simpler groups of atoms, single atoms, or ions.
新陳代謝維持生命所必需的，發(fā)生于存活細胞中或生物體中的物理和化學(xué)過(guò)程的總和。在此過(guò)程中，一些物質(zhì)被分解從而為生命過(guò)程提供能量，而另一些維持生命所必需的物質(zhì)則被合成
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.
