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。

The next morning, the box had disappeared but Mrs. Ramsay was sure that the kidnapper would keep his word.

第二天早晨，放钱的盒子不见了。但拉姆齐太太确信绑架者是会履行诺言的。

All the biscuits that were sent were carefully weighed.

凡送来的饼干都仔细地称量。

Meanwhile, the traffic piled up behind.

与此同时，后面的车辆排成了长龙，

Recent scientific evidence seems to indicate that this assumption is incorrect.

但近期科学研究发现，好像这种假设是不正确的。

The use of pesticides and fertilizers produces cheap grain and vegetables.

使用杀虫剂和化肥生产出廉价的谷物和蔬菜。