Fires are often caused by cigaretteends which people carelessly throw away.
dict.cn
结论:香烟烟蒂水浸泡液引起雄性小鼠骨髓PCE微核率增高,并诱发睾丸初级精母细胞染色体数目畸变。
Conclusion : Cigaretteend immersion increases the frequencies of micronucleus in bone marrow PCE and induces numeral aberration of chromosomes in primary spermatocyte .
dict.cnki.net
烟灰缸里满是掐灭了的烟蒂。
The ashtray was full of the stubbed-out butts of cigarettes.