1. We must trace the source of these noxious gases before they asphyxiate us. 在我们被这些有毒气体窒息之前，必须查出其来源。
2. It is showed that the main reason of error on measure results of noxious gas content after blasting is the use of cannon expanding. 实验表明，钢炮扩孔是造成小直径炸药爆炸后有毒气体含量测定结果产生误差的重要原因。
3. Epimetheus had in his house a jar, in which were kept certain noxious articles, for which, in fitting man for his new abode, he had had no occasion. 厄庇朱透斯的家里放着一个瓮，里面装着一些害人精。他因为一直忙着挨面人类在新住天危身，还没有瞅失上处置它们。
