discussion
/dɪsˈkʌʃən/noun
mass noun
1- the action or process of talking about something, typically in order to reach a decision or to exchange ideas讨论：
defence is the subject of considerable discussion in western Europe
防御是在西欧进行了大量讨论的一个话题
the EC directive is currently under discussion.
欧共体的指令目前正在讨论中。
1.1
- count noun a conversation or debate about a certain topic谈话; 辩论：
discussions about environmental improvement programmes.
关于改善环境计划的谈话。
1.2
- count noun a detailed treatment of a particular topic in speech or writing详述。
词源
Middle English (denoting judicial examination)： via Old French from late Latin discussio（n-）， from discutere 'investigate' （see DISCUSS）.