side e issue与正题无关的问题
supply side issue供应方面的问题;供应方面问题
a side issue次要的第二位的事;枝节问题
side issue detail与正题无关
divert into a side issue把转向枝节问题
N-COUNT（可数名词） A side issue is an issue or subject that is not considered to be as important as the main one. 次要问题
I must forget these side issues and remember my mission.
我必须忘记这些次要问题，记住我的使命。