Luyện nghe bài hát There's a Delta for Every Epsilon

There's a for every epsilon,
It's a fact you can always count upon.
There's a for every epsilon
And now and again,
also an n.

But one condition I give:
The epsilon be positive
A lonely life all the live,
In no
A for them.

How sad, how cruel, how tragic,
How pitiful, and adjec-
Tives I might mention.
The merits our attention.
If an is a hero,
Just it is greater than zero,
It be mighty discouragin'
To lie to the of the origin.

This rank is not for us,
We must for an enlightened calculus,
epsilons all, both minus and plus,
Have
To call own.