?病毒变异
... 末日 1.[基督教] doomsday; day of judgment; judgment day 末日审判 last judgment; [宗教] 世界末日 lastday2.(死亡或灭亡的日子) end; doom 末日将至 one's last day is soon reached; 末日可数 one's days are numbered; 侵略者的末日 the end of the aggressors 病毒变异 virus mutate; virus variation 病毒变异株 viral variant ...