belemnites的中文意思、音标与词形变化

(belemnite 的复数) n. 箭石

plural of belemnite n. a conical calcareous fossil tapering to a point at one end and with a conical cavity at the other end containing (when unbroken) a small chambered phragmocone from the shell of any of numerous extinct cephalopods of the family Belemnitidae