To increase the size, volume, quantity, or scope of.

扩大；扩充；扩张；发展。

To express at length or in detail; enlarge upon, as a topic.

详述；引申(如引申题旨)。

To increase in size.

变大；膨胀。

To become friendly and willing to talk.

(指人)变为友善可亲。

To open up or out.

张开；绽放。

To speak or write at length or in detail.

详谈；细述。