They propagate slowly, but they produce very toxic smoke.

它们传播缓慢，但会产生剧毒的烟雾。

It caused record-breaking pollution and some places were surrounded by toxic yellow smoke.

它造成了破纪录的污染，一些地方被有毒的黄色烟雾包围。

The man's brother evacuates London as panic spreads when they learn that the Martians are releasing a toxic black smoke and look to be unstoppable.

当得知火星人正在释放有毒黑烟并且看起来势不可挡时，这名男子的兄弟在恐慌蔓延时撤离了伦敦。

The Veracruz state governor Javier Duarte recommended that people stay indoors even though the fire has been brought under control and the cloud of toxic smoke is dissipating.

维拉克斯州州长Javier Duarte建议人们待在室内，尽管火势已经得到控制，有毒烟雾正在消散。

Authorities in Jordan say a crane loading chlorine tanks onto a ship in the port of Aqaba dropped one of them, causing an explosion of toxic yellow smoke that killed at least 13 and sickened some 250 people.

约旦当局说，在亚喀巴港，一辆起重机将氯气罐装载到一艘船上，其中一个氯罐掉落，导致有毒的黄色烟雾爆炸，造成至少13人死亡，约250人患病。