1.腔棘鱼，矛尾鱼（产于马达加斯加附近海域，1938 年发现之前被认为已灭绝）a large fish found mainly in the seas near Madagascar. It was thought to be extinct until one was discovered in 1938.
A crystal layer behind the coelacanth's retina reflects light like a mirror, a boon in the ocean's dim waters.
腔棘鱼的视网膜后有一晶体层，看上去像一面镜子，对在昏暗的水中活动大有裨益。
Hagi is the coelacanth of Japan, the ancient survivor that people assume to be extinct.
萩城是日本的腔棘鱼——人们以为已经灭绝了的古老的幸存者。
He instantly identified it as a coelacanth, a species believed extinct for 60 million years.
Smith先生马上鉴别出它是腔棘鱼，一种被认为6000万年前已灭绝的物种。
The coelacanth's slow, graceful stroke is like no other fish's.
与其他鱼类不同，腔棘鱼划水动作缓慢而优雅。
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