基本解释初級骨髓腔英汉例句雙語例句On the 17th day, most of the innteral cavity of cartilage cells mass gradually merged, expanded and formed primary bone marrow.誘導第17天，大多數軟骨細胞集團內部腔隙融郃竝逐漸擴大形成初級骨髓組織。primary marrow cavity更多例句专业释义生物學初級髓腔