virulence
n. 毒力；毒性；恶意（等于 virulency）
例句
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。
《柯林斯英汉双解大词典》
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。
How is virulence measured?
如何衡量毒性？
