[bǎo cún]
(使事物、性质、意义、作用等继续存在, 不受损失或不发生变化) preserve; keep; conserve; hold; maintain; reposit
conserve one's vitality [strength]
保存精力
preserve one's strength; conserve one's forces
保存实力
preserve reference materials
保存资料
These books are well preserved.
这些书保存得很好。