discussion debate argument的区别，如果有例子就好，呵呵

discussion是洽谈 debate是辩论 argument是争论
要看具体语境的，如果是A或是B是辩论赛的主题的话要用debate，如果是合同中要商讨一些细节性问题要用discussion，如果是一些小争吵就用argument
Their case is now under discussion.
他们的案件现在正在讨论中。
They will debate face to face.
他们将当面进行辩论。
The argument ended in tears.
争吵到最后声泪俱下.

discussion

n. 讨论
v. 讨论,商议
例句与用法:
The whole discussion pivots on this one point.
整个讨论内容均以此为中心。
In their discussion, I was in favor of Mr. Li.
在他们的争论中, 我支持李先生。
I was not privy to the discussion, so I cannot tell you what was decided.
我并不了解讨论的情况，所以无法告诉你做了什么决定。
He joined us in the discussion yesterday.
他昨天参加了我们的讨论。
Their case is now under discussion.
他们的案件现在正在讨论中。
When will the matter come up for discussion?
这件事什么时候提出来

debate [di'beit]

n. 辩论,讨论
v. 辩论
例句与用法:
Her resignation caused much public debate.
她辞职一事引起群众议论纷纷。
He debated buying a new car