I've been trying to find the translation for that also. It's a beautiful piece of music, isn't it?
I'm not exactly sure how accurate this translation is, but this is what I found...
Why do we stay in the womb?
Why do we provide punishment to our weak hearts?
Our star wouldn't allow, wouldn't allow
Our planet wouldn't allow, wouldn't allow
The pulse of veins in the Earth flowing
Faint, faint pulse
Of the heart leading to death
The weak life returns to the planet
Is it necessary to sacrifice the soul?
Why do we stay in the womb?
Why do we beg for forgiveness
In the fateful Earth?
The translation is direct, and so it doesn't match normal standards of the English language. To me it doesn't make a whole lot of sense, so I'll try to find a better one.
Source:
click