sharks and rays belong to the class chondrichthyes.
鲨鱼和鳐鱼属于软骨鱼纲。
chondrichthyes are characterized by a cartilaginous skeleton.
软骨鱼纲的特征是具有软骨骨骼。
the evolution of chondrichthyes dates back to the devonian period.
软骨鱼纲的演化可以追溯到泥盆纪。
marine biologists study the diversity of chondrichthyes species.
海洋生物学家研究软骨鱼纲物种的多样性。
unlike bony fish, chondrichthyes lack swim bladders.
与硬骨鱼不同，软骨鱼纲没有鳔。
rough scales called denticles cover the skin of chondrichthyes.
被称为皮齿的粗糙鳞片覆盖着软骨鱼纲的皮肤。
many species of chondrichthyes are currently threatened by overfishing.
许多软骨鱼纲物种目前正受到过度捕捞的威胁。
the anatomy of chondrichthyes includes multiple gill slits.
软骨鱼纲的解剖结构包括多个鳃裂。
fossils provide evidence of ancient chondrichthyes existence.
化石提供了古代软骨鱼纲存在的证据。
chondrichthyes generally utilize internal fertilization for reproduction.
软骨鱼纲通常利用体内受精进行繁殖。
electroreception is a sensory ability found in chondrichthyes.
电感受是软骨鱼纲中发现的一种感官能力。
sharks and rays belong to the class chondrichthyes.
鲨鱼和鳐鱼属于软骨鱼纲。
chondrichthyes are characterized by a cartilaginous skeleton.
软骨鱼纲的特征是具有软骨骨骼。
the evolution of chondrichthyes dates back to the devonian period.
软骨鱼纲的演化可以追溯到泥盆纪。
marine biologists study the diversity of chondrichthyes species.
海洋生物学家研究软骨鱼纲物种的多样性。
unlike bony fish, chondrichthyes lack swim bladders.
与硬骨鱼不同，软骨鱼纲没有鳔。
rough scales called denticles cover the skin of chondrichthyes.
被称为皮齿的粗糙鳞片覆盖着软骨鱼纲的皮肤。
many species of chondrichthyes are currently threatened by overfishing.
许多软骨鱼纲物种目前正受到过度捕捞的威胁。
the anatomy of chondrichthyes includes multiple gill slits.
软骨鱼纲的解剖结构包括多个鳃裂。
fossils provide evidence of ancient chondrichthyes existence.
化石提供了古代软骨鱼纲存在的证据。
chondrichthyes generally utilize internal fertilization for reproduction.
软骨鱼纲通常利用体内受精进行繁殖。
electroreception is a sensory ability found in chondrichthyes.
电感受是软骨鱼纲中发现的一种感官能力。
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