This is the center of mass.

物体的中心在这里。

youdao

You see the center of mass?

看到质量重心了吧？

youdao

The center of mass must be somewhere here.

重心肯定是这里某处。

youdao

Thomas Wang at the Mass General Heart Center was the senior author of the study.

VOA: special.2009.07.15

The new textbook book was put together by the Documentation Center of Cambodia, a non-profit group tasked with recording the years of mass killing under the Khmer Rouge.

VOA: standard.2010.04.19

Firebombing Jewish-owned vehicles is small potatoes in comparison to developments at the center of mass of the Israeli Arab onslaught: state land.

CENTERFORSECURITYPOLICY: Israel's unwavering Guardsmen

Petersburg, this location has widely been criticized by team officials, members of the media, and fans alike as inconveniently off-center from the critical population mass of the region.

FORBES: The Impact Of Location On Brand Loyalty: The Cubs, Cardinals And Rays

The bad force is an undulating, pullulating, filthy, dark mass, at the center of which a hell-mouth with dagger teeth and lips spews scalding yellow mist.

NEWYORKER: Green Lantern