1·So corporations are moving operations out of the U. S. at breathtaking speed.
所以许多公司正在以惊人的速度搬离美国境内。
2·S. At least an additional 100,000 women have other precancerous conditions that often are treated in the same way.
除此以外，还有至少100，000名有其他癌前期状态的妇女也经常被用同样的模式进行治疗。
3·S. degree in Mechanical Engineering, because of the excellent job market in the U. S. at this time, it is relatively easy for them to find a job.
可一旦他们获得机械工程的硕士学位，由于这一时期美国良好的就业市场，他们相对容易地找到了工作。
4·Because P and S waves travel at different but fairly constant speeds, the interval between their arrivals increases in proportion to the distance from the earthquake focus, or initial rupture point.
由于 P 波和 S 波以不同但相当恒定的速度传播，它们到达的间隔与到震源或初始破裂点的距离成比例地增加。
5·When historians have paid any attention at all to unemployment, they have focused on the Great Depression of the 1930's.
当历史学家对失业问题有所关注时，他们关注的是20世纪30年代的大萧条。
6·Let′s take a look at her timetable.
让我们看看她的课程表。
7·At first, thousands of unskilled laborers were recruited; by the 1730's, however, American employers demanded skilled artisans.
起初，数千名非熟练工人被招募；然而，到了18世纪30年代，美国的雇主需要有技术的工匠。
8·"We're not saying that global warming created inequality," says Noah S. Diffenbaugh, the writer of the study and a professor at Stanford University who studies climate change.
“我们并不是说全球变暖造成了不平等现象。”该项研究的作者——来自斯坦福大学研究气候变化的诺亚·迪芬巴夫教授称。
9·When drive-ins were at the height of their popularity in the late 1950's, some 4,000 existed in the United States, but today there are less than one-quarter that many.
在20世纪50年代末汽车影院最受欢迎的时候，美国大约有4000家汽车影院，但如今，这个数字还不到当时的四分之一。
10·By the 1990's, less than half of the earth's original rain forests remained, and they continued to disappear at an alarming rate every year.
到20世纪90年代，地球上原有的雨林只剩下不到一半，而且它们每年都继续以惊人的速度消失。