A newer anti-HIV drug called pyridinone caused HIV to mutate into a form which could not reproduce or infect new cells. 一种叫作吡啶酮的新型抗艾滋病药物能促使艾滋病毒变异，使其不能繁殖，也不会再感染新的细胞。
“你知道，我交朋友有一套的，”她故意补充说。"I have a knack for making friends, you know," she added meaningfully.他是个爱交朋友的人。He is a clubbable chap.她交朋友往往热情而超俗。She tends to have intense, spiritualized friendships....
It's inconstancy, but not inability, that's to be feared.不怕无能, 就怕无恒.Hermia was looking at him and wondering at his strange inconstancy.赫米亚望着他,对他莫名其妙的反复无常感到很惊奇.It must be a confession of his inconstancy and conf...
The person may become dizzy for no apparent reason.这类人可能会莫名其妙地感到头晕。He came over all dizzy when he stood up.他一站起身就觉得天旋地转。He felt sick and dizzy and then passed out.他感到恶心、眩晕，然后就昏了过去。...