pre·serv·er
noun/prɪˈzɜːvə(r)/
/prɪˈzɜːrvər/
- [countable] a person who makes sure that a particular situation does not change
保护人；维护者；保存者 - The police are the preservers of law and order.
警察负责维持治安。
- The police are the preservers of law and order.
- [countable, uncountable] a substance used to prevent wood from decaying (= being destroyed by natural processes)
木材防腐剂