I'm going to explain to you now what we physicists mean by center of mass of a system.

我现在给你们解释，物理学家说的系统重心。

youdao

The old building will be replaced, most probably by a modern sports center.

这栋古老的建筑物将最有可能被一个现代运动中心所替代。

youdao

In a survey by the center of older workers who were laid off during the recession, just one in six had found another job, and half of that group had accepted pay cuts.

对在经济衰退期间被解雇的老员工中心进行的一项调查中，只有六分之一的人找到了另一份工作，其中一半的人接受了减薪。

youdao

Research by the International Center for Agricultural Research in the Dry Areas and its partners has already proven to be successful.

VOA: special.2010.02.08

It used to be employed by the Space Research Center at the specific Institute of Technology.

用于“空间研究中心“,这是一个特殊的技术协会。

哈佛公开课 - 计算机科学课程节选

Richmond, Virginia, for example, became a huge slave-trading center by the 1840s and 1850s.

比如里士满和弗吉尼亚,在十九世纪四十年代和五十年代,它们成为了巨大的奴隶贸易中心

耶鲁公开课 - 美国内战与重建课程节选

Both articles in the Journal underscore the contention offered by Center President Frank J.

CENTERFORSECURITYPOLICY: What is at stake

As predicted in the attached op.ed. by Center for Security Policy director Frank J.

CENTERFORSECURITYPOLICY: Center for Security Policy | The Fat��s In The Fire: Only Assertive Presidential Leadership Can Secure Both B-2 and SDI

The event concluded with remarks by Center Board of Regent Chairman Terry Elkes .

CENTERFORSECURITYPOLICY: Center For Security Policy