1.
There was AT least five inches of this gray, pasty, dusty drywall soot on the ground as well as a thickness of it in the air.
地面上足足有五英寸厚的墙灰，灰色的、糊状的灰尘，在空气中也有这么厚的一层。
2.
The airborne carcInogens are In the atmosphere as absorbed matter on soot particles
空气传播的致癌物在大气中是烟炱粒子上吸附的物质。
3.
The soot and grime of a big manufacturing town
大工业城市的煤烟与尘垢
4.
There are dots of soot on the window sill
窗台上有一点烟灰。
5.
Fine soot collected from incompletely burned carbonaceous materials,used as a pigment and in matches,explosives,lubricants,and fertilizers.
油烟从含碳物质的不完全燃烧中收集的黑煤烟，可用作颜料和用于火柴、爆破、润滑和施肥中
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