These men entice girls with necessities such as food, money or school fees, or luxuries such as expensive gifts, in exchange for sex.

And I think the answer is exchange, the habit of exchanging one thing for another.

Those things were presents.

(g) Exchange of samples of illicit drugs seized

A gift?

Chocolate cake.

A present?

A gift.

A present.

Presents!

I should just think not. I've got a surprise for you.

Yeah, a present.

You can teach them in the laboratory to do a little bit of exchange and indeed there's reciprocity in other animals But the exchange of one object for another never happens.

At the ceremony, gifts were exchanged and welcoming speeches and expressions of gratitude to the Geneva authorities were made before a large local audience.

The gift of life is thine.

That present.

A gift.

It's a gift.

To buy a gift.

Oh, my present!

Birthday presents!

Any presents!

(c) Binary stars, mainly with matter exchange (DQ Her)

I understand you propose to give us water in exchange for food.

Here! Instead of a gift.

She has brought a gift.

This is from them.

Here. It's a gift.

Thank you.

Phaedra, your present.

What gift?

It's a present.

It's a gift!

A gift from the gods!

Imagine, if you will a gift.

The price?

Thank you for your present.

Thanks for your gift.

I buy you a present.

I am giving you a little gift.

I brought a present for you.

Another gift.

Thans for the gift!

Ollie! Chocolate cake!

They were for his birthday.