Yes?

请说
It's going around the Sun.

它绕着太阳转
Let's imagine it's a circular orbit.

想象一下有个圆轨道
Then we've just shown here,

就像这里写的一样
it's an accelerated frame of reference.

它是个有加速度的参考系
It just turns out that if you put the v^2 and you put the r,

这样的话如果你把 v^2 和 r 代进去
and r is 93 million miles,

r 是 9300 万英里
you will find the acceleration is small enough for us to ignore.

你会发现加速度小得足以被忽略
But there are effects of the Earth's acceleration,

但地球的加速度还是会产生影响
which we'll demonstrate.

这一点我们马上就要证明
The Focault pendulum is one example

傅科摆就是一个例子
where you can see that the Earth is rotating around its own axis.

通过观察它你会发现地球在自转