virulence

1. N-UNCOUNT Virulence is great bitterness and hostility. 恶毒; 敌意[正式] [oft N 'of' n]

The virulence of the café owner's anger had appalled her. 这位咖啡店老板非常愤怒，充满敌意，把她给吓坏了。

2. N-UNCOUNT The virulence of a disease or poison is its ability to harm or kill people or animals. 毒性; 致命性

Medical authorities were baffled, both as to its causes and its virulence. 医疗当局对其病因及有多致命都还不怎么了解。