底外胚层

【医】 basal ectoderm

底的英语翻译：

a copy kept as a record; base; bottom; end; fundus; the truth of a matter
【医】 base; basement; bases; basi-; basio-; basis; batho-; bathy-; fimdi
floor; fundus; pavimentum; solum

外胚层的英语翻译：

【医】 animal-germ layer; dermal layer; ectoblast; ectoderm; epiblast
neurodermal layer