垫

我把一个垫子放在椅子下面。

Wǒ bǎ yí gè diàn zǐ fàng zài qī zhǐ xià miàn.

I placed a cushion under the chair

他先垫付了费用，等项目盈利后再收回。

Tā xiān diànfù le fèiyòng, děng projǐ miángéng zài néng huíshuō.

He advanced the costs initially and repaid them later when the project turned profitable