分词翻译
外的英语翻译：
besides; in addition; not closely related; other; outer; outside; unofficial
【医】 ec-; ecto-; exo-; extra-; xeno-胚层的英语翻译：
【医】 blastoderm; blastodermic layer; blastodisk; blastophyllum
emioryonic plate; germ layer; germ-disc; germ-layer; germinal disc
germinal layer; germinal membranes; membrana germinativa
