A living being usually has two elements: a set of instructions that tell the system how to sustain and reproduce itself, and a mechanism to carry out the instructions.
A living being usually has two elements: a set of instructions that tell the system how to sustain and reproduce itself, and a mechanism to carry out the instructions.
任何活*物通常具有两要素：一是告诉系统如何维持自身和进行自我复制的指令系统，另一个是执行指令的机制。