1. 比较;对照
    When you make a comparison, you consider two or more things and discover the differences between them.

    e.g. ...a comparison of the British and German economies...
           英国经济与德国经济的比较
    e.g. Its recommendations are based on detailed comparisons between the public and private sectors...
           建议是建立在对国营部门与私营部门进行详细比较的基础上的。

2. 比拟;比喻
    When you make a comparison, you say that one thing is like another in some way.

    e.g. It is demonstrably an unfair comparison...
           这样打比方显然不公平。
    e.g. He finds the comparison of insect wings with a sailing boat useful up to a point...
           他发现把昆虫的翅膀比作一艘帆船在某种程度上是有用的。

3. 与…相比;与…比较而言
    If you say, for example, that something is large or small in comparison with ,in comparison to, or by comparison with something else, you mean that it is larger or smaller than the other thing.

    e.g. Is the human heart weak in comparison with the other organs?...
           与其他器官相比，人的心脏是不是很脆弱？
    e.g. The amount of carbon dioxide released by human activities such as burning coal and oil is small in comparison...
           相比之下，人类活动燃烧煤、石油等所释放的二氧化碳要少一些。

4. 不能相提并论;不能相比
    If you say there is no comparison between one thing and another, you mean that you think the first thing is much better than the second, or very different from it.

    e.g. There is no comparison between the knowledge and skill of such a player and the ordinary casual participant.
           临时的普通参赛者无法与这种选手所掌握的知识和技巧相提并论。

5. 比得上;可(与…)相媲美
    If someone or something stands or bears comparison with another person or thing, they are as good, or almost as good.

    e.g. ...the only post-war French intellectual who stands comparison with De Tocqueville.
           法国战后唯一能与德·托克维尔相媲美的知识分子