pēi pán
- blastoderm
- germinal disc
- embryonic disc
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letters of administration,
letters patent,
letter-scales,
letterset,
lettersheet,
letterspacing,
letterweight,
letterwriter,
letterzine,
Lettic,
相似单词
胚根,
胚根鞘,
胚孔,
胚瘤,
胚囊,
胚盘,
胚泡,
胚乳,
胚胎,
胚胎的,