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PBS地球-物趣

Forming a notochord like those still found in some of today's jawless fish.

形成脊索,就像今在一些无颌鱼中发现的脊索一样。

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Awesome Nature

Perhaps the chordate crowd, with their notochords, segmented muscles and big bony skeletons.

或许是脊索物,有脊索,分节肌肉和干瘪大骨架。

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PBS地球-物趣

And the rod down its back was a notochord, an early precursor of the vertebral column seen in vertebrates.

上的杆是脊索,是脊椎物脊柱的早期前身。

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PBS地球-物趣

For one thing, the white lines found on some of those fossils go past the eyestalks where true notochord would end.

一方面,在其中一些化石上发现的白线越过眼柄,而真正的脊索应该在眼柄处结束。

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Indo-Aryan, Indobatrachus, indocarbon, Indochina, Indo-chinese, indochinite, indocile, indocility, indocin, indococcus,

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