词汇	an immature ovum
释义	an immature ovum 未成熟的卵细胞
随便看	urban heritage urban heritage conservation urban heritage management urban hierachy urban hierarchical planning urban hierarchical structure urban hierarchy urban hierarchy system urban high-pressure gas pipeline urban high-speed line Urban high-speed orbit urban high voltage power network urban highway urban highways urban highway tunnel Urban Hinterland urban historical geography Urban historical heritage Urban historical street and lane urban historic area urban historic culture urban historic feature Urban historic street block Urban History urban history site