Surface currents are influenced by tides, the rotation of the Earth, even the shape of land.

表面洋流受潮汐、地球自转甚至陆地形状的影响。

This is the physics of our day-to-day lives—the rolling of balls, the rotation of the earth, and the mechanics of engines.

这是我们日常生活中的物理学——球的滚动、地球的自转和引擎的机械原理。

Because it's through the access of the rotation of the earth that we get our seasons and the transitions of the seasons.

因为是通过地球自转轴，我们才有了季节和季节的转换。

Seventy million years ago, the faster rotation of the Earth meant that there were just 23 and a half hours in a day.

7000万年前，地球自转速度较快，这意味着一天只有23.5小时。

As we move backwards in time, and the Moon moves closer, both the Moon's orbit and the rotation of the Earth get faster and faster.

当我们把时间倒转，月球逐步靠近，月球的运转和地球的运转越来越快。

Because of friction with the rest of the Earth, this slowing of the bulge is actually slowing the rotation of the Earth itself, making the day longer.

由于这个凸起部分与地球其他部分的摩擦力，要使这一凸起部分减速，实际上也就减缓了地球自身自转的速度，结果每天都会略长一些。

When I was writing my first novel, " The Age Of Miracles, " I spent months trying to figure out what would happen if the rotation of the Earth suddenly began to slow down.

当我在写我第一部小说《奇迹时代》时，我花了几个月的时间试图去弄清楚如果地球的旋转突然开始慢下来的话，会发生什么事情。