adj.有害的；恶性的
This event had a pernicious influence on society. 这件事情对社会造成了有害的影响。
Pollution of the water supply reached a level pernicious to the health of the population. 水源污染已经达到危及居民健康的程度。
Lack of intrinsic factor can result in pernicious anemia. 缺乏内源因素可导致恶性贫血。
