1. Enclosed in this outfit, I waited in line for an hour with other adventurers, mostly office workers in their 20's.
    我包裹在这一身装束里，与其他的历险者一起排了一小时队。他们大多是20多岁的办公室职员。

2. But the ratio is even greater among active women, affecting up to 80 percent of female endurance athletes.
    而这一比例在积极锻炼的妇女中数值更高，女耐力运动员中缺铁的则高达80%。

3. Would your twin live a shorter life because he or she started out with DNA that was already 10, 20, or 30 years old?
    你的孪生兄弟或姐妹出生时DNA就已经10、20或30岁了，难道就因为这样他或她的寿命会更短吗？

4. The motion to amend the club´s constitution was defeated by 20 votes to 15.
    修改俱乐部章程的动议以二十票对十五票被否决了。

5. The car runs at approximately 80 miles per hour.
    这辆车每小时大概跑八十英里。

6. The average output of the factory is 20 cars a day.
    该工厂的平均产量是每天20辆汽车.

7. The Hubble telescope was launched into space by NASA on April 20, 1990 at a cost of over a billion dollars.
    哈勃望远镜于1990年4月20日由国家航空航天局发射升空，耗资10多亿美元。

8. There are over 80 pyramids in Egypt, but the Great Pyramid is the largest of all.
    在埃及，有80多座金字塔，大金字塔是其中最大的一座。

9. The government has succeeded in increasing use of birth control from 10 percent of the population 20 years ago to 49 percent today.
    印尼政府已成功地扩大了实行节制生育的范围，节育人口已从20年前的10%增加到今天的49%。

10. They believe schools will be things of the past in 20 years as media technology, like the Internet, teaches children.
    他们认为由于因特网这类传播技术能够让孩子们接受教育，20年之后学校将成为昨日黄花。