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单词 pelvic fin
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Examples ofpelvic fin

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The breast of the longnose trevally is scaleless, extending up to behind thepelvicfinorigin and laterally to the pectoral fin base.
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The pectoral fins and lateral line are absent, and there is only a single, right-sidepelvicfin.
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The dorsal fins are small, with the first dorsal fin origin lying behind thepelvicfinorigins.
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The dorsal fin origin is behind thepelvicfinorigin.
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In any case, even if its structure and composition remain unknown, thepelvicfinprobably inserted just behind the pectoral-fin origin.
From theCambridge English Corpus
Locally, it may also be known as a witch or threadfin sole (due to the filamentouspelvicfinon the eyed surface).
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The first dorsal fin slightly exceeds the second in size and originates over the midpoint of thepelvicfinbases.
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Thepelvicfinconsists of one spine and 18 or 19 soft rays.
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Thepelvicfincontains a single spine and 18 to 20 soft rays.
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Thepelvicfinwas small or sometimes absent, and had six lepidotrichia.
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The first dorsal fin has a narrowed rounded apex and originates over the middle of thepelvicfinbases.
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The fish has nopelvicfinand no lateral line.
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The first dorsal fin originates well behind the pectoral fins, while the second dorsal originates over the middle of thepelvicfinbases.
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Males have a fleshy flap along the posterior margin of the thickened firstpelvicfinray.
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The caudal fin has black trailing and leading edges, and thepelvicfinis dusky to black.
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Thepelvicfinranges from short to moderate to large.
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Thepelvicfinassists the fish in going up or down through the water, turning sharply, and stopping quickly.
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The first dorsal fin is about a third larger than the second and originates over thepelvicfinorigins.
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The anterior portion of eachpelvicfinis modified into a wide, paddle-like appendage.
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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:2024/12/28 1:10:36