首頁›Browse›E›embryonic stageembryonic stage編輯正在努力提供更完整的內容，建議 20 分鐘後再回來看看embryonic stageembryonic stage — 名詞名詞1. the early phase of development before birth1.名詞釋義胚胎期the early phase of development before birth例句The heart begins to beat during the embryonic stage.