第三人称单数： soots
过去式： sooted
过去分词： sooted
现在分词： sooting

Coal soot emissions will probably be eased by the economic downturn .

在经济不景气之下，工厂排放的煤烟很可能也会减少。

The analysis found that cyclists had 2.3 times more soot in their airway cells .

分析表明，骑自行车者下呼吸道细胞中的煤烟含量要高出2.3倍。

New research suggests that cyclists are at increased risk of lung damage because of soot .

新的研究表明，骑自行车者正因煤烟处于与日俱增的肺损伤危机之中。

Environmental protests , especially concerning soot emissions from ship exhausts , will be another hurdle .

还有来自环保人士的抗议，特别是关于船只燃煤产生的煤烟排放问题是另一个需要克服的阻碍。

And soot from india , china and a few other countries threatens water supplies fed by the himalayan-tibetan glaciers .

印度，中国和其他国家的煤烟，威胁到喜马拉雅山脉到西藏冰川一带的饮用水供应。