An instrument or a process, physical or mental, by which something is done or comes into being:
辦法，途徑：用來制造某事物的工具或者事物產生的物理過程或精神過程：
The sequence of steps in a chemical reaction.
（化學反應的）過程：化學反應的壹系列步驟
An instrument or a process, physical or mental, by which something is done or comes into being:
辦法，途徑：用來制造某事物的工具或者事物產生的物理過程或精神過程：
The sequence of steps in a chemical reaction.
（化學反應的）過程：化學反應的壹系列步驟