| 释义 |
〔pronucleus〕The haploid nucleus of a sperm or egg before fusion of the nuclei in fertilization.原核，前核：在受精细胞核结合之前，精子或卵子的单倍体细胞核〔bacterium〕Any of the unicellular, prokaryotic microorganisms of the class Schizomycetes, which vary in terms of morphology, oxygen and nutritional requirements, and motility, and may be free-living, saprophytic, or pathogenic, the latter causing disease in plants or animals.细菌：一种裂殖菌类的单细胞原核微生物，在结构形态、氧气、营养需求和运动方面都各有所不同，可以独立生存，也可是腐生或病原性的，后者可引起植物或动物的疾病 |