· 单向性：在化学突触中，信号只能从突触前膜传向突触后膜，确保信息流动方向明确。Consequently, the ancestor of aleph could are already a pictogram of the ox head in proto-Sinaitic script[five] influenced by Egyptian hieroglyphs, styled as being a triangular head with two horns extended.Use Note: In producing, th