to be sooty; to be stained
cleaning dust etc. from rooms; housecleaning; (the traditional Japanese end-of-the-year, 13th December) big house cleaning; spring cleaning (only not in spring)
soot-colored bamboo (coloured); bamboo duster (with the leaves still attached at one end)
cleaning dust etc. from rooms; housecleaning; (the traditional Japanese end-of-the-year, 13th December) big house cleaning; spring cleaning (only not in spring)