earth's

Some pulsars keep time better than the earth's most accurate clocks.

某些脉冲星发送脉冲比地球上最精确的时钟都准时。

The earth's shadow on the moon was quite distinct.

月球上的地球阴影很清晰.

Spacecraft which are re-entering the earth's atmosphere are affected by g forces.

重返大气层的航天器受到重力的作用。

The satellite remains in one spot relative to the earth's surface.

相对地球表面而言，这颗卫星位置固定。

Water covers a large proportion of the earth's surface.

水覆盖了地球表面的大部分。

The earth's circumference is about 25,000 miles.

地球的圆周约为25,000英里.

This book is about the earth's magnetism.

这本书是有关于地磁的.

The earth's axis is the line between the North and South Poles.

地轴是南北极之间的线.

The lunar stone is different from earth's.

月球的石头和地球的不同.

Today we are overpopulated, straining the earth's resources.

现在我们人口过多，致使地球资源使用过度。

The station would burn up on re-entry into the earth's atmosphere.

空间站在重返地球大气层时会被烧毁。

The spacecraft made a successful reentry into the earth's atmosphere.

宇宙飞船成功地重返大气层.

profound changes in the earth's climate

地球气候的巨大变化

The spacecraft burned up when it re-entered the earth's atmosphere.

宇宙飞船重新进入地球大气层时烧毁了.

Pigeons navigate less accurately when the earth's magnetic field is disturbed.

地球磁场受到干扰时,鸽子的道航能力就会变得不准确.