soot

n. 黑烟灰，油烟

son et lumiere, son-in-law, sonar, sonata, song, song-book, songbird, songster, songstress, songwriter, sonic, sonic barrier, sonic boom, sonnet, sonny, sonority, sonorous, sonorously, soon, sooner or later, soothe, soothing, soothsayer, sooty, sop, sophism, sophist, sophisticate, sophisticated, sophistication, sophistry, sophomore, sophomoric, soporific, soporifically, soppily, soppiness, sopping, soppy, soprano,