| 单词 | sac |
| 释义 | sac (sæk ) Word forms: sacs countable noun A sac is a small part of an animal's body, shaped like a little bag. It contains air, liquid, or some other substance. The lungs consist of millions of tiny air sacs. Synonyms: pouch, bag, pocket, bladder Collocations: small sac The small sac inside the blastocyst begins producing red blood cells. Retrieved from Wikipedia CC BY-SA 3.0 Each statocyst consists of a small sac lined with sensory cilia that detects the movement of a mineral mass, a statolith, under gravity. Retrieved from Wikipedia CC BY-SA 3.0 When a hatchling decides to leave the shell, it has a small sac protruding from its plastron. Retrieved from Wikipedia CC BY-SA 3.0 Crested geckos have two small sacs for calcium on the roof of their mouths. Retrieved from Wikipedia CC BY-SA 3.0 Alveoli are the small sacs in the lungs that exchange oxygen with the blood. Retrieved from Wikipedia CC BY-SA 3.0 Translations: Chinese: 囊 Japanese: 嚢 |
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