The center of surface rupture to the earthquake is located around Nanchong and Luliangshan.

地震的地表破裂中心在南冲、陆良山一带。

youdao

The compression in the EW direction during recent two years is more obvious than before, to south of Beijing it is the area of movement conversion and the quadrant pseudo-center of surface strain.

近两年东西向的压性作用较前明显，北京以南地区是运动的转化地区及面应变象限的准中心地区。

youdao

On our spherical Earth, gravity pulls "down" us toward the planet's center of mass. So on a flat surface, we naturally stand up straight.

在我们地球上，重力会把我们拉向星球的质量中心，因此在平坦的地表，我们自然站得很直。

youdao

The center of the earthquake was a scant 10 kilometers beneath the surface, and just 15 kilometers from the capital.

VOA: standard.2010.01.13

Users simply need to place their handsets in the center of the space, on a level surface, such as a table or chair.

FORBES: iPhone Gets Panoramic Video With 'Dot' Camera Accessory

In December, the Office of Naval Research successfully conducted a world-record 33-megajoule shot of the Electromagnetic Railgun aboard Naval Surface Warfare Center Dahlgren Division.

FORBES: U.S. Navy Pioneers Next-Gen Electric Weaponry

In the center of the ocean, wind-driven currents bring fresh water to the surface, so stirring the ocean could transform it into a well-organized storage depot.

NEWYORKER: The Climate Fixers