At least the female had the sense to speak slowly.

He spoke slowly, like a man with all the time in the world.

She spoke slowly, as if having to speak my language was hard for her.

He spoke slowly, as if she had suddenly become a child.

Rather, you should make an effort to speak slowly, simply, and clearly.

He spoke slowly, trying to put it together on his own.

He spoke slowly to them, using simple words that they could understand.

He raised his hand, and spoke slowly in a clear cold voice.

He spoke slowly and clearly, to be sure of understanding.

Then he spoke slowly, that the fire might find time to do its work.