noun
COLLOCATIONS FROM CORPUS
■ NOUN
yolk
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Young Arrowana should not have a yolk sac - and be seen feeding before purchase.
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Even if the yolk sac is not visible, still be sure that is feeding before parting with your money.
EXAMPLES FROM CORPUS
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Be sac and write your story step by step.
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The child slipped into the world, still in its birth sac .
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The tip of the catheter was positioned directly on the gestational sac .
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Then he lifted something small and wet; a pale, tiny sac attached by tubes and tendons to the rest.
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With these different theories come different conclusions about the history of the skeleton, fins, nasal sacs and so on.