Read Edit View history 外胚层 wàipēicéng ectoderm Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 外胚层/ 外胚層 wàipēicéng ectoderm ectoderm (cell lineage in embryology) 神经系统是由外胚层发育而来的。 Edit Delete References Add reference No references for this word.