1. He goes to bed at half past ten.
    十点半睡觉。

2. He began to reckon up his time: he started on Monday and today was Friday; five days, from seven to five, less half an hour for breakfast and an hour for dinner, eight and a half hours a day -- forty-two hours and a half in all.
    他开始计算自己的工钱：他从星期一开始干活，今天是星期五，共五天，早七点到下午五点，除去不到半小时的早饭时间，一个小时的午饭时间，一天干八个半小时，一共是四十二个半小时。

3. Her husband, already half undressed, asked:
    她丈夫的衣服已经脱了一半，问道：

4. He sought the advice of the astronomer Sosigenes, who suggested that the true length of the year be adopted as 365 1/4 days.
    他去请教天文学家索尼西斯的意见。索尼西斯建议一年的真实长度应采用365.25天。

5. Half the people on the ship came down with typhoid, and the destination had to be changed from Mexico to Venezuela.
    船上半数人因伤寒病躺下了，于是目的地只好从墨西哥改为委内瑞拉。

6. He opened the bag, full of small pieces of gold. He left half the gold on a rock.
    他打开小包，里面全是小金块。他丢了一半在岩石上。

7. A wave length (the horizontal distance between two wave crests),
    波长（两个浪峰间的水平距离）

8. And a period (which is the time it takes a wave crest to travel one wave length).
    和周期（海峰走过一个波长所需的时间）。

9. Did you serve this gentleman half an hour ago, Caroline?
    卡罗琳，半小时前你接待过这位先生吗？

10. During a single crucial three-week period during our teenage years, chemical activity in the brain is cut in half.
    我们的青少年阶段有一个为期三周的关键时期，此时脑部的化学反应活动一分为二。