dà / huǒ / xùn / sù / màn / yán / zhěng / dòng / lóu / biàn / chéng / le / yí / piàn / huǒ / hǎi

大火迅速蔓延，整栋楼变成了一片火海。

The fire spread quickly, and the whole building turned into a sea of flames.