英:['ektəsɑ:k]
美:['ektəˌsɑk]
质膜:同plasma membrane
外囊(卵)
noun
the semisolid external layer of protoplasm in some unicellular organisms (as an amoeba) : ectoplasm
1 外质
exoplasm ectoplasm
2 外膜
ectosarcous ektexine mantle adventitia