垫底 diàndǐ HSK7 foundation Origin Definitions Defs Strokes Stroke Words Sentences Sents Showing: foundation All meanings 4 diàndǐ 4 foundation 1rank last 1tide over 1underlay 1 1 sentence for 垫底 (diàndǐ — foundation) 这些基础课程是为以后的专业学习垫底。 zhèxiē jīchǔ kèchéng shì wèi yǐhòu de zhuānyè xuéxí diàndǐ. These basic courses lay the foundation for future specialized studies. Source: Dong Chinese Dictionary