the danger and speed of spreading of a disease(疾病的)致命性,严重性
The virulence of the disease is causing great concern in medical circles.这种病的高致命性已经引起了医学界的极大关注。
formal very strong feelings of hating or opposing something or someone恶毒;狠毒
We are witnessing racism of a virulence that we haven't seen in Europe since the 1940s.我们正在亲眼目睹欧洲自20世纪40年代以来从未出现过的恶毒的种族主义。