preserver
🇺🇸
/prɪˈzɜːrvər/
🇬🇧
/prɪˈzɜːvə(r)/
someone who keeps something from changing or being damaged
The lifeguard is a preserver of swimmers' safety at the beach.
救生員是海灘上保護游泳者安全的守護者。
a chemical that stops wood from rotting
The woodworker applied a preservative to protect the fence from insects and weather.
木工給圍欄塗上防腐劑以防止害蟲和天氣的侵蝕。