名词
中文翻译：烟头
同义词：
['smoke mark', 'cigarette ash例句：1. The smoke spot on the wall is a reminder of the fire that destroyed the building.（墙上的烟迹是那场火灾摧毁建筑物的提醒。）']
例句：
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1. The smoke spot on the wall is a reminder of the fire that destroyed the building.
墙上的烟迹是那场火灾摧毁建筑物的提醒。
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2.He found a small piece of paper with a smoke spot on it.
他发现了一张带有烟迹的小纸片。
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3. The detective noticed a smoke spot on the floor and followed its trail to the suspect's room.
侦探注意到地板上有一个烟迹，并沿着烟迹追踪到嫌疑人的房间。