conserve

1. V-T If you conserve a supply of something, you use it carefully so that it lasts for a long time. 節省

The factories have closed for the weekend to conserve energy. 這些工廠在那個周末關了廠以節省能源。

2. V-T To conserve something means to protect it from harm, loss, or change. 保護

...a big increase in U.S. aid to help developing countries conserve their forests. …美國對幫助發展中國家保護森林的援助的大幅增加。