垫底diàndǐto be at the bottom; to rank lastHSK 7-9PronunciationdiàndǐExample sentence这次考试他垫底了,成绩全班最差。Zhè cì kǎoshì tā diàndǐ le, chéngjì quán bān zuì chà.He came last in this exam, with the worst grade in the class.Read and choose an answerOne fixed sampleExplore a sample