[mass noun]the action or process of duplicating something 复制;复印,复写 ■[count noun](Genetics)a DNA segment in a chromosome which is a copy of another segment (遗传)(染色体的)重复,复制脱氧核糖核酸重复段
语源
late Middle English (used in the mathematical sense 'multiplication by two'): from Old French, or from Latin duplicatio(n-), from duplicare 'to double' (see duplicate)