1. 重型天花：科 family | 重型天花 Variola major | 重复感染 repeated infection

noun

1. a type of smallpox virus that has a fatality rate of up to 25 percent

Synonym: variola major virus

2. a highly contagious viral disease characterized by fever and weakness and skin eruption with pustules that form scabs that slough off leaving scars

Synonym: smallpoxvariola