disseminate和promulgate区别

　　The doctors disseminated information about preventive medicine.

　　医生们传播有关预防医学的知识。

　　However, they face big barriers to disseminating technology across industry.

　　但他们面临巨大的障碍，无法在整个行业传播技术。

　　The implementation date of this practice shall be promulgated otherwise.

　　本规范实施日期另公告之。

　　Since the law was promulgated, it has already developed two positive useful aspects.

　　法律颁布后，已经产生了两方面的积极作用。