1. 意见；看法；主张；见解
    Your opinion about something is what you think or believe about it.

    e.g. I wasn't asking for your opinion, Dick...
           我并不是在征求你的意见，迪克。
    e.g. He held the opinion that a government should think before introducing a tax...
           他认为政府在开征新税前应仔细斟酌。

2. （对某人的）评价，印象
    Your opinion of someone is your judgment of their character or ability.

    e.g. That improved Mrs Goole's already favourable opinion of him.
           那件事更加深了古尔太太对他的好印象。

3. 舆论；（群体的）信仰，观点
    You can refer to the beliefs or views that people have as opinion .

opinion的近义词

    e.g. Some, I suppose, might even be in positions to influence opinion...
           有的人，我认为，甚至有可能影响舆论。
    e.g. There is a broad consensus of opinion about the policies which should be pursued.
           对应当实行何种政策，舆论达成了广泛一致的意见。

4. 专家意见；鉴定
    An opinion from an expert is the advice or judgment that they give you in the subject that they know a lot about.

    e.g. Even if you have had a regular physical check-up recently, you should still seek a medical opinion.
           即使近期做过一次常规体检，也应当征求医生的意见。

5. see also: public opinion;second opinion

6. 在…看来；据…的意见
    You add expressions such as 'in my opinion' or 'in their opinion' to a statement in order to indicate that it is what you or someone else thinks, and is not necessarily a fact.

opinion的翻译

    e.g. The book is, in Henry's opinion, the best book on the subject...
           依照亨利的看法，这本书是关于该主题的最佳著述。
    e.g. Well he's not making a very good job of it in my opinion.
           然而，在我看来，这件事他做得不尽如人意。

7. 持…观点；认为；相信
    If someone is of the opinion that something is the case, that is what they believe.

    e.g. Frank is of the opinion that the 1934 yacht should have won.
           弗兰克认为本该是那艘1934年的帆船获胜。

8. a matter of opinion -> see matter