HSK 7–9 · verb · noun
垫
to pad; to put something under; pad; cushion
桌子不平，拿张纸垫一下。
Zhuōzi bùpíng， ná zhāng zhǐ diàn yíxià。
The table isn't level; take a piece of paper and pad it.
他跑得最慢，比赛总是垫底。
Tā pǎo de zuì màn， bǐsài zǒngshì diàndǐ。
He runs the slowest and is always at the bottom in races.
椅子上放个垫子会舒服些。
Yǐzi shàng fàng gè diànzi huì shūfu xiē。
Putting a cushion on the chair makes it more comfortable.