突变 1.(突然急剧的变化) sudden change; change suddenly; transilience; accident; saltation; revulsion; idiovaviation; jump; abrupt change 认识过程中的突变 a sudden change in the process of cognition; 天气突变。 there was a sudden change in the weather.2.[生物学] mutation 自发突变 spontaneous mutation; 突变体 mutant