under seal

柯林斯词典

underseal /ˈʌndəˌsiːl/

[英国英语]

• 1. N a coating of a tar or rubber-based material applied to the underside of a motor vehicle to retard corrosion (给车底涂的)防水材料 (US name undercoat)

• 2. V to apply a coating of underseal to (a motor vehicle) (给车底)涂防水材料

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