1. When he was better, he joined the army for a time as a surgeon and went on an expedition to Portugal.
    以后刚好一些，他就参军成为一名外科军医，随军远征葡萄牙。

2. When that side of the moon on which the sun is shining is facing us, we see a round shining circle — a full moon.
    当月亮接受阳光照射的一面面向我们时，我们看到的是个发亮的圆盘——满月。

3. We see the change from new moon to quarter to full and back to new moon every twenty-eight days.
    我们每二十八天就能看到从新月到半月、到满月再回到新月的变化过程。

4. Within seconds, a small display unit on the checker´s right shows the name and price of the item; at the same time this information is printed on a strip of paper.
    瞬间功夫，在收款员右手的一个小型显示器上就显示出商品名称、价格，同时这些信息就印在了一张长纸条上。

5. While they were talking the baby was sleeping restlessly, uttering little cries from time to time.
    他们说话时，孩子睡得很不踏实，还不时地哭几声。

6. We did owe nearly a pound, but I´ve been paying it off a little at a time."
    我们确实欠过近一镑的钱，可我一直在一点一点地还。”

7. Working time is considered precious.
    工作时间被认为是宝贵的。

8. It requires much time, commitment and discipline to keep up with the flow of the course.
    它需要花更多的时间，需要学习者专一、自制，以跟上课程进度。

9. When other people are finished and having fun is most likely the time when online students do their course work.
    别人已完成作业开始玩耍，而此时网络学生却很可能还在上课。

10. We need to have a talk with her. The news is full of stories about teenagers in trouble whose parents hardly know anything about their problems."
    我们得和她谈谈。新闻里报导的尽是惹上麻烦的青少年，可他们的父母却不知道自己的孩子有什么麻烦。"