单词	infolding
释义	infolding /ˈɪnfəʊldɪŋ / /ˈɪnfəʊldɪŋ / noun technical A turning or folding inwards; an inward fold.The head region of the embryo is demarcated anterior to the node by the head fold, an infolding of the blastoderm composed of both ectoderm and endoderm.... For example, most metazoans go through a developmental stage called a gastrula - a ball of cells with an infolding that later forms the gut. In the octopus eye it is formed by an infolding of the surface cells on the head, which become thickened to form eye components.
随便看	black carbon Black Carib black cattle black caucus black cherry black chocolate black choler black church black clock black coal black coat black-coated blackcock black cockatoo black cod black code black coffee black consciousness black cotton soil Black Country black county black crappie black crop black cumin black curlew

英语词典包含243303条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。