yǐ / qián / méi / yǒu / diàn / rè / tǎn / shí / rén / men / cháng / yòng / tāng / pó / zi / nuǎn / bèi / wō以前没有电热毯时,人们常用汤婆子暖被窝。Before electric blankets were available, people often used hot-water bottles to warm their beds.