Scientists have yet to explain the cause of these unique formations.

So I briefly explained the cause of the problem, thinking perhaps the old fox might have an idea or two.

In a low voice, he explained the cause of his glee.

He did not wait for our inquiries, but immediately explained the cause.

Penny asked for help but couldn't bring herself to explain the cause of her depression.

This is sufficiently explained in explaining the cause of the parts.

Many have tried to explain the cause of the trouble.

How can I explain to you the cause of my hesitation?

"You need somebody to explain the cause of death, Quintana?"

A1 Investigators struggled to explain the cause of the crash.