dōng / tiān / de / shí / hòu / wǒ / huì / zài / diàn / bèi / shàng / miàn / zài / pū / yī / céng / diàn / rè / tǎn冬天的时候,我会在垫被上面再铺一层电热毯。In winter, I put an electric blanket on top of the mattress pad.