常見(jiàn)例句雙語(yǔ)例句An internal body cavity of some primitive invertebrates, similar to a coelom but lacking a mesodermal lining.某些原始無(wú)脊椎動(dòng)物體內(nèi)腔室，與體腔相似，但是沒(méi)有中胚膜。odict.net 返回 primitive body cavity