论文部分内容阅读
一场家庭聚会结束后,房间里往往会充斥着浓浓的烟碱味。烟灰缸里的卫生状况更不容乐观:挤满了烟头,到处是烟渣,有的还在冒着烟气……烟灰缸是
After a family reunion, the room is often filled with a thick layer of nicotine. The hygienic conditions in the ashtray are even less optimistic: they are full of cigarette butts, smoke scum everywhere, and some are still smoking... Ashtray is