基本解释上神经骨同根派生 epineurals相关词英汉例句Arowanas only owned simplest “I” -type epipleurals, another type one-end-bifork epineurals was found in pike eel, meanwhile several simple-type epipleurals appeared. 双须骨舌鱼只有形态最简单的“I”形髓弓小骨，没有脉弓小骨；epineurals更多例句