ご説明させてもらおうの英語

I will explain briefly.

I will explain it once for all.

I will explain once for all.

to provide an additional explanation

I will explain it once for all.

Please explain it.

Please explain.

Would you like me to explain it?

to explain in detail―enter into details―go into details

Sometime I will explain.

The explanation is strained―forced―far-fetched.

I will pass on the message.

Let me introduce myself.

Please pass on the message.

You will excuse my going into details.

to explain well

Sorry for the lack of explanation.

He explains the difficulties as they occur.

I demand an explanation

Please introduce ... to me.

a wordy explanation

I will do myself the honour to show you the way.

an additional explanation

I will show you the way.

If you would be kind enough to come this way [to follow me].

a summary explanation

an explanation

a meaningful explanation

give a description of

Allow me to explain to you.