下的英語翻譯：

below; descend; down; give birth to; give in; go to; leave off; lower; next
take
【醫(yī)】 cata-; hyp-; infra-; kat-; sub-

胚層的英語翻譯：

【醫(yī)】 blastoderm; blastodermic layer; blastodisk; blastophyllum
emioryonic plate; germ layer; germ-disc; germ-layer; germinal disc
germinal layer; germinal membranes; membrana germinativa

皮質的英語翻譯：

【醫(yī)】 brain mantle; Cort.; cortex; cortices; pallium; substantia corticalis

瘤的英語翻譯：

tumour; lump; burl; hump; knurl; nubble
【醫(yī)】 neoplasm; new growth; onco-; oncoma; tumeur; tumor