1. The next important advance in understanding malaria came in the 17th century, when many newly discovered plants in the New World were sent back to Europe to be used as medicines.
    在疟疾理解方面接下来的一个重要进展发生在17世纪，这时，很多在新世界新发现的植物被送回到欧洲用作药材。

2. The nations of Eastern Europe, including Poland, Hungary, and the Czech and Slovak Republics, are considered the most polluted of all the world’s industrialized countries.
    东欧各国，包括波兰、匈牙利、捷克和斯洛伐克共和国，被认为是世界上工业化国家中污染最严重的。

3. This Central American country has one of the most ambitious programs in the world to reserve the ecological diversity of its tropical rain forests.
    这个中美洲国家为保护其热带雨林的生态多样性，已制订出世界上最为雄心勃勃的的规划之一。

4. The area, called the Grand Banks, was the most abundant fishing ground in the world.
    号称大浅滩的海域是当时世界上产鱼最多的渔场。

5. They think the world in which they are going to spend their lives won't be a very satisfactory place.
    他们认为自己将在其中度过一生的这个世界不会是一个令人感到满意的地方。

6. To those of us who are immigrants, the bill seems simply to sanction a policy secretly implemented by U.S. industry for nearly four decades — namely, stealing brains from the third world.
    对我们这些移民来说，这一议案只不过是正式批准一项美国工业界已秘密地执行了近40年的政策而已——即从第三世界窃取人才的政策。

7. The uniting of the world around the AIDS epidemic is without prior example.
    全世界因艾滋病这一流行性疾病而联合了起来，这是前所未有的。

8. Through open exchanges of scientific facts as well as support of international organizations such as the World Health Organization, all nations can join efforts to fight against this life-threatening disease.
    通过公开交流科学资料和诸如世界卫生组织这类国际性组织的支持，各国就能携手与这危及人类生命的疾病作斗争。

9. These had been used to find enemy planes and ships in World War II.
    这些无线电波曾在第二次世界大战中被用于搜索敌人的飞机和船只。

10. The struggle to succeed in one of the world's most competitive societies is starting earlier and earlier, and is most evident in the growing popularity of special schools that train students during evenings and weekends to pass the examinations requi
    日本是当今世界竞争最为激烈的社会之一，在这里，成功之搏开始得越来越早，最明显的证据是一些特殊学校的生源剧增。这些学校在晚上和周末上课，训练学生通过进入私立中学和大学的入学考试。