他在这个领域有丰富的经验。

He has ___a ___wealth ___of experience in this field.

经常提到的一个优势是，老年人拥有从一生中积累的丰富经验。

One of the advantages often mentioned is that old people have ___a ___wealth ___of experience, gained throughout life.

这本书提供了关于古代文明的丰富信息。

The book provides ___a ___wealth ___of information on ancient civilizations.