n. a vaguely specified concern
n. that which has mass and occupies space
n. a problem
n. (used with negation) having consequence
n. 事件, 物质, 原因, 素材, 实体, 重要
vi. 有关系
1. The matter is important for our project.
这个问题对我们的项目很重要。
2. Can you explain what the matter is?
你能解释一下问题是什么吗？
3. It doesn't matter if you arrive late.
如果你迟到也没关系。