underbody sealant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underbody sealantunderbody sealant — 名詞名詞1. a protective coating applied to the underside of a vehicle1.名詞釋義底盤防鏽塗層a protective coating applied to the underside of a vehicle例句I applied underbody sealant to prevent rust on my car.