pestilent meaning in English

adj.
1.(对社会等)有害的，破坏性的；弊病多的。
2.〔口语〕讨厌的，烦死人的。
3.引起传染病的；危险的，致疫的。
adv.
-ly

I destroy all noisome and rank weeds, i keep down all pestilent vapours .
我摧毁了一切丛生的毒草，控制一切有害的烟雾。
To the man of letters it is a missile that he can fling in the reader's face to disprove the pestilent heresy .
对于文人，它是一颗导弹，他可以把它投到读者脸上，以驳斥那种有害的邪说。
Smallpox is a pestilent disease
天花是一种致命的疾病。
Here is a fellow , who , infected by the most pestilent and blasphemous code of devilry that ever was known , abandoned his property to the vilest scum of the earth that ever did murder by wholesale , and you ask me why i am sorry that a man who instructs youth knows him
有这么一个人，因为受到了人世间最险恶最亵渎的魔鬼信条的传染，竟然把财产放弃给了世界上最坏的杀人如麻的流氓，而一个教育青年的人竟然会认识他。对此你却要来回我为什么感到遗憾，好吧，我来回答你。