1. People who work in offices are frequently referred to as ´white-collar workers´ for the simple reason that they usually wear a collar and tie to go to work.
    坐办公室的之所以常常被称作"白领工人"，就是因为他们通常是穿着硬领白衬衫，系着领带去上班。

2. People travelling long distances frequently have to decide whether they would prefer to go by land, sea, or air.
    出远门的人常常需要决定是走旱路、水路，还是坐飞机。

3. Unfortunately, there is frequently a great interval between knowing how to solve a problem and finding the resources to solve it.
    不幸的是，从知道怎样解决问题到准备充足的人力物力去解决它，两者之间还有很大的差距。

4. Oil rigs have to be repaired frequently and divers, who often have to work in darkness a hundred feet under water, have been frightened out of their wits by giant fish bumping into them as they work.
    钻井平台需要经常修理，潜水员常常要在水面100英尺以下摸黑工作，他们曾在工作时被撞到他们身上的大鱼吓得惊惶失措。

5. In this form of marriage, men and women changed partners frequently.
    在这种形式的婚姻里，男人和女人频繁地交换他们的伴侣。

6. Frequently the reaction it causes is only a skin rash or a light fever.
    通常只是皮疹、低烧。

7. Frequently they will say they like it better.
    他们常说他们更喜欢那样。