1. Expand your world. Many discoveries in science, engineering and the arts mix ideas from different fields. Consider "The Two-String Problem."
    拓展你的视野。许多理工和人文科学方面的发现都融合了不同领域中的思想。以"两绳问题"为例。

2. We mix oil and vinegar to put on salad.
    我们把油和醋搀和在一起，用来拌色拉。

3. When personalities don't mix, the excitement of being away at college can quickly grow stale.
    彼此性格不合时，离家上大学的那种兴奋感就会立刻变得索然无味。

4. They show that the Khoisan may be a very ancient mix of west Asians and black Africans.
    基因研究表明科伊桑人可能是古代西亚人与非洲黑人的混血，

5. And Melissa is very fond of hot chocolate, which is why she bought the powdered hot chocolate mix, though she never drinks it herself.
    梅莉莎非常喜爱热巧克力，所以她买了速溶热巧克力粉，虽然她自己从来不喝这东西。

6. As usual, I made noises with the cards without bothering to mix them, much less read them.
    与往常一样，我做出洗牌的声音，却根本没有费心去洗，更别谈读牌了。

7. For example, dirty sewage (污水沟系统) water from homes and factories must not mix with drinking water.
    例如：从家里和工厂里排放出来的污水是绝不可和饮用水混在一起的。