soot black

同根派生

The 1000 annual launches would belch out about 600 tonnes of soot, or black carbon – less than today's output from airplanes and other sources.
每年1000次的發射率會釋放600噸的菸塵或黑碳----比飛機或其他每天的排放量要少。
"If I wore a white shirt to school, by the end of the day it would be brown, " recalls He, who was born in 1974, "and there would be a ring of black soot under the collar."
他廻憶說：“如果我穿一件白襯衫去上學，一天下來襯衫就變成了棕褐色。領子下麪還有一圈黑黑的菸灰。”
It is not possible to tell from this view exactly what pollutants made up the haze on February 20, but it probably contains mostly soot or black carbon and possibly some ground-level ozone.
從照片上我們不能得知汙染物是如何造成2月20日的菸霧汙染的，但是菸霧中很可能含有大量的煤灰或者炭黑也許還有地麪臭氧。

Black soot from the detonated Black Hawk charred the wall of the animal pen.
NEWYORKER: Getting Bin Laden
Images from the 1970s--of rattling engines and tailpipes spewing black soot--are hard to shake.
FORBES: The Other Green Engine: Diesel?
He did this so many times that the walls of his cell were black with soot.
NEWYORKER: Hellhole