adj.很有害的，恶性的，致命的，险恶的，引起巨大伤害的，毁灭性的
The principle had been pernicious from beginning to end.
这条原则自始至终都是有害的.
I did what I could, but her mother's influence was pernicious.
我已尽力了，但是她母亲贻害颇深。
Business may be troublesome, but idleness is pernicious.
事业虽扰人, 怠惰害更大.
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