noun🔗Share绒毛，底毛。 A layer of short hairs underneath the longer ones of an animal's fur"The dog's thick undercoat helps keep him warm in the winter. "这只狗厚厚的绒毛（底毛）有助于他在冬天保持温暖。animalbodyappearancepartChat with AIVocabulary GamePractice Reading
noun🔗Share底漆，底涂层。 A coat of paint or other material applied onto a surface before that of a topcoat; a coloured primer"Before painting the bedroom walls blue, we applied a white undercoat to ensure the color was even and bright. "在把卧室墙壁刷成蓝色之前，我们先刷了一层白色的底漆，以确保颜色均匀且鲜艳。materialtechnicalbuildingindustryChat with AIVocabulary GamePractice Reading
noun🔗Share内衬，衬里. A coat for wearing indoors, under an overcoat."Seeing the heavy snowfall outside, she quickly slipped on her undercoat before grabbing her winter overcoat. "看到外面下着大雪，她赶紧套上一件薄内衬，然后才拿起冬天的外套。wearstyleappearanceChat with AIVocabulary GamePractice Reading
verb🔗Share打底漆, 涂底色。 To apply an undercoat to."I will undercoat the wooden fence tomorrow before painting it with the final color. "明天我會在給木柵欄刷最後的顏色之前，先打底漆。materialutilitybuildingindustryChat with AIVocabulary GamePractice Reading
