give an opinion on 对…发表意见
表达自己的意见和观点Express their opinions and ideas
发表意见express one's opinion/ view on the subject of 评论make comments on something
air one's opiniondeclare oneselfput in one's two cents worth
give sb some advice。advice英 [ədˈvaɪs] 美 [ədˈvaɪs] 劝告;忠告;建议;意见。Your community
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