tobacco soot的用法和樣例：
例句
- The chimney is almost choked up with soot.
煙囪幾乎被煙垢堵住了。 - Let it become downright black, and it is still sightly , especially if its trimmings are of white stone, with soot in the depths and the high spots washed by the rain.
紅磚就算被染得漆黑，看起來還是能夠使人悅目，尤其是如果用白石鑲邊，經雨水一洗刷，凹處煙垢殘存，凸處本色外露，紅黑映襯，更覺美觀。
