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单词 dorsal fin
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Examples ofdorsal fin

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Thedorsalfinconsists of at least 26 short rays supported by 25 pterygiophores.
From theCambridge English Corpus
Samples were excised from the left side of each fish below thedorsalfin.
From theCambridge English Corpus
The fishes are distinguished by a singledorsalfin, absence of spines, and abdominal fins restricted to seven or fewer rays.
From theCambridge English Corpus
The disk was turned until the crosshairs aligned vertically with thedorsalfinand horizontally with the pupils.
From theCambridge English Corpus
At the seconddorsalfin, this vortex sheet gets mixed with the boundary layer.
From theCambridge English Corpus
The anterior rays of thedorsalfinare longer than the others.
From theCambridge English Corpus
The fishes with which we are here concerned have the depth of their caudal fin practically as large as (or larger than) that of thedorsalfinand body combined.
From theCambridge English Corpus
The firstdorsalfinoriginates above the pectoral fin insertions; the second is smaller than the first and originates behind the pelvic fins.
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Thedorsalfinis deeply notched between the 10 spines and the 9 to 13 soft rays.
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Modified denticles cover the dorsal surface of the head and upper edge ofdorsalfin.
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The firstdorsalfinbears a large, thin walled compressed spine, displaying no ornamentation and concave anteriorly.
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The other part of thedorsalfinis long and slightly tapered and has one spine and 24 to 27 soft rays.
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Itsdorsalfinhas 59 to 62 rays.
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The pencil cardinalfish and the bulls-eye are very similar, except the former has seven spines in the firstdorsalfin, whereas the latter has eight.
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Moreover, the wide posterior extension of thedorsalfinand the reduced size of the caudal peduncle could indicate that the adipose fin was absent or, at least, poorly developed.
From theCambridge English Corpus
The seconddorsalfinis smaller than the first.
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Thedorsalfinbase is short and thedorsalfinspine is weak.
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Reaching a length of 1.9m ft, this small brown to gray shark has a slender body with a tall, sickle-shaped firstdorsalfin.
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The species has only a small, triangular lump in the place of adorsalfin.
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These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
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更新时间：2025/2/10 22:08:02