Nuǎn / qì / dǎ / kāi / hòu / fáng / jiān / lǐ / xiǎng / qǐ / le / qīng / wēi / de / hū / hū / shēng暖气打开后,房间里响起了轻微的呼呼声。After the heating was turned on, a faint whirring sound arose in the room.