| 释义 |
DEFINITIVE EXAMPLES 权威例句〔belemnite〕A cone-shaped, fossilized internal shell of any of an extinct genus of cephalopods related to the cuttlefish.箭石:由灭绝的与乌贼有血亲关系的头足纲动物的内壳形成的尖锥状化石美国传统〔thunderstone〕Any of various mineral concretions, such as a belemnite, formerly supposed to be thunderbolts.箭石,雷石,陨石:如过去被认为是雷电的箭石等各种矿物混合美国传统 |