基本解释[生物学]原始体腔英汉例句双语例句An internal body cavity of some primitive invertebrates, similar to a coelom but lacking a mesodermal lining.某些原始无脊椎动物体内腔室,与体腔相似,但是没有中胚膜。odict.netprimitive body cavity更多例句专业释义生物学原始体腔