But! This bulgy “ellipsoid” Earth isn't the whole story either.

但地球并不是我们要探讨全部内容。

In 2006, data gathered by Nasa's Wilkinson satellite suggested that the Universe itself may be an ellipsoid — an oval.

2006 年，美国国家航空航天尔金森卫星收集数据表，宇宙本身可能是一个——形。

These dense lumps of rock bump out from the ellipsoid and their mass gravitationally attracts oceans, while valleys in the ocean floor have less mass and the oceans flow away, shallower.

这些稠密岩石块从球中碰撞出来，它们质量在引力作用下吸引着海洋，而海床上峡谷质量较小，上方海水也因此流走。