cyclostomes
基本解釋
- 圓口類
英漢例句
- possible predecessor of the cyclostomes.
可能是圓口綱脊椎動(dòng)物的祖先。 - eel-shaped vertebrate without jaws or paired appendages including the cyclostomes and some extinct forms.
缺少下巴或成對(duì)附器的似鰻的動(dòng)物包括圓口綱脊椎動(dòng)物和某些滅絕的種類。 - small (2 in) extinct eellike fish with a finned tail and a notochord and having cone-shaped teeth containing cellular bone; late Cambrian to late Triassic; possible predecessor of the cyclostomes.
2英寸大小已經(jīng)滅絕的長有帶鰭尾、脊索和含有細(xì)胞質(zhì)狀骨胳的錐形牙齒似鰻的魚;後寒武紀(jì)到後三曡紀(jì)的生物;可能是圓口綱脊椎動(dòng)物的祖先。