life preserver編輯正在努力提供更完整的內容，建議 20 分鐘後再回來看看life preserverlife preserver — 名詞名詞1. a device worn or held to keep a person afloat in water1.名詞釋義救生衣a device worn or held to keep a person afloat in water例句Please put on a life preserver before getting into the boat.