conserve例句
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。
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。
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.