1. 差异;差别;悬殊
    A contrast is a great difference between two or more things which is clear when you compare them.

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    e.g. ...the contrast between town and country...
           城乡差别
    e.g. The two visitors provided a startling contrast in appearance...
           这两位访客的外表截然不同。

2. 相比之下;与…相反
    You say by contrast or in contrast, or in contrast to something, to show that you are mentioning a very different situation from the one you have just mentioned.

contrast的反义词

    e.g. The private sector, by contrast, has plenty of money to spend...
           相比之下，私营部门就有很多钱可供开销。
    e.g. In contrast, the lives of girls in well-to-do families were often very sheltered...
           相反，生活在富裕家庭的女孩子通常都备受呵护。

3. 与…截然不同;与…对比鲜明
    If one thing is in contrast to another, it is very different from it.

    e.g. His public statements have always been in marked contrast to those of his son...
           他和他儿子在公开场合的言论总是截然不同。
    e.g. That is in stark contrast to the situation during the 1970 oil crisis.
           那和1970年石油危机时的情形完全不同。

4. 截然不同的事物;差异明显的事物
    If one thing is a contrast to another, it is very different from it.

    e.g. The boy's room is a complete contrast to the guest room.
           这个男孩的房间和客房截然不同。
    e.g. ...a country of great contrasts.
           一个截然不同的国家

5. 对比;对照
    If you contrast one thing with another, you point out or consider the differences between those things.

    e.g. She contrasted the situation then with the present crisis...
           她将当时的情况和目前的危机进行对比。
    e.g. Contrast that approach with what goes on in most organizations...
           将那个方法和大多数机构现行的做法进行对比。

6. 截然不同;有明显差异;对比鲜明
    If one thing contrasts with another, it is very different from it.

    e.g. Johnson's easy charm contrasted sharply with the prickliness of his boss...
           约翰逊的亲和力和他老板易怒的性格形成了鲜明的对比。
    e.g. Paint the wall in a contrasting colour.
           把这面墙刷成对比鲜明的颜色。

7. (照片、电视图像、画作等的)颜色反差，明暗对比
    Contrast is the degree of difference between the darker and lighter parts of a photograph, television picture, or painting.

contrast的翻译

    e.g. ...a television with brighter colours, better contrast, and digital sound.
           颜色更为鲜艳、图像对比度更高、具备数字音响效果的电视