I didn't feel like going into a big explanation.

Without waiting for a response, he pulled up a chair and sat, launching into an explanation of their problem- the missing data.

I must have looked surprised, because he went right into an explanation he'd obviously made many times before.

I had to go into a little explanation about the spirit world.

Then he launched forth into a detailed explanation of his plan.

Now is not the time to go into an explanation of it.

He launched into an explanation about how small the universe had been back then.

He didn't have to go too far into an explanation before she understood.

Maybe then he could get some sense out of the guy, even coax him into an explanation.

Relieved, I started into a long explanation and asked if she would mind telling the person with me about various things in the store.