If you remark on something, or make a remark about it, you say what you think or what you have noticed, often in a casual way. Visitors remark on how well the children look... General Sutton's remarks about the conflict. If you comment on a situation, or make a comment about it, you give your opinion on it. Mr Cook has not commented on these reports... I was wondering whether you had any comments. If you mention something, you say it, but only briefly, especially when you have not talked about it before. He mentioned that he might go to New York.

remark 经常指比较随意地评论, 说出所思所见。如，Visitors remark on how well the children look (来访者说孩子们看上去很好)，General Sutton's remarks about the conflict (萨顿将军就这次冲突发表的评论)。comment 用来指就某事发表观点。如，Mr Cook has not commented on these reports (库克先生还没有对这些报告作出评论)，I was wondering whether you had any comments (我在想你是否有什么评论)。mention 指简要提及，尤其是以前没有提及的事。如，He mentioned that he might go to New York (他提到他有可能去纽约)。