soot

煤烟，烟灰英释中释nblack powder that is produced when something is burned

用煤烟熏黑；以煤烟弄脏中释v

1 soot blower,吹灰装置；烟灰吹除机

2 soot formation,烟炱的形成；积灰

1 ...a wall blackened by soot..…一堵被煤烟灰熏黑了的墙。