prolong

健康饮食可以延长你的寿命。

Eating a good diet can ___prolong your life.

新政策可能会延长经济复苏的过程。

The new policy might ___prolong the economic recovery process.

新疗法旨在延长癌症患者的生存期。

The new treatment aims to ___prolong the survival of cancer patients.