考察

I can't tell what may happen," he went on."

事情是不可料的，"他继续说。"

The mechanism is as follows: interdict the sodium channel and restrain sodium from flowing in.

局麻药的作用机制通常是在神经细胞膜内侧阻断电压门控性Na+通道，抑制Na+内流，干扰神经冲动在神经纤维上的传导而产生局麻作用的[5] 。