• vt. 保存；将…做成蜜饯；使守恒
• n. 果酱；蜜饯

con-, 强调。-serve, 照看，保护，词源同observe, 观察。

conserve

conserve: [14] Latin servāre meant ‘keep, preserve’ (it was not related to servus ‘slave’, source of English serve and servant). Among the compounds formed from it were praeservāre ‘guard in advance’ and, using the intensive prefix com-, conservāre. This passed into English via Old French conserver. Amongst its derivatives are conservation [14], conservative [14] (first used in the modern political sense by J Wilson Croker in 1830), and conservatory [16] (whose French original, conservatoire, was reborrowed in the 18th century in the sense ‘musical academy’).
=> observe, preserve, reserve

conserve (v.)

late 14c., from Old French conserver (9c.), from Latin conservare "to keep, preserve, keep intact, guard," from com-, intensive prefix (see com-), + servare "keep watch, maintain" (see observe). Related: Conserved; conserving. As a noun (often conserves) from late 14c.

1. The republic's factories have closed for the weekend to conserve energy.

为了节约能源，该共和国的工厂周末不开工。

来自柯林斯例句

2. They had to conserve the candles now with winter upon them.

冬天眼看就要到了，他们不得不把蜡烛省着用。

来自柯林斯例句

3. Help to conserve energy by insulating your home.

对房屋做隔热处理来帮助节约能源。

来自《权威词典》

4. He writes on both sides of the sheet to conserve paper.

他在纸张的两面都写字以节省用纸.

来自《简明英汉词典》

5. Conserve your energy, you'll need it!

保存你的精力, 你会用得着的!

来自《简明英汉词典》