When Heimdall had lost sight of you, you were no longer on Earth.

海姆达尔看不到你时你就不在地球上了
Well, how's that possible?

这怎么可能啊
I believe you were and you weren't.

我认为你既在又不在
The Nine Realms travel within Yggdrasil,

九大王国在宇宙树中游走
orbiting Midgard in much the way your planet orbits the sun.

像地球环绕太阳那样环绕米德加德
And every five thousand years the worlds align perfectly,

每五千年这些王国列成一条直线
and we call this the Convergence.

我们称之为天体汇聚
During this time the boarders between worlds become blurred.

在此期间各王国间的界线会变得模糊
It's possible you found one of these points.

你可能就是找到了这样一个模糊点
We are lucky that it remained open.

那个点没有关闭真是走运
Once the worlds pass out of alignment,

一旦各王国偏离汇聚直线
the connection is lost.

与彼此的连接就会中断