sac

/sæk/ uk　 词频 #17836

托福 TOEFL

sac 是什么意思

中文释义

n. 囊, 液囊, (美)战略空军司令部

[医] 囊, 袋

英文释义

n. a structure resembling a bag in an animal

sac 的真实例句

以下例句摘自真实英文文章，看看 sac 在自然语境里怎么用：

Even the famous ink sac turned out to be a three-dimensional lump enriched with clays and pyrite.

—— Oldest octopus fossil found to not be an octopus

The size of living octopuses' mantles — the bulging organ sac sitting above their eyes — is related to the length of their jaws.

—— 'Kraken' octopus that lived at the time of the dinosaurs was a 62-foot-long apex predator of the ocean

With eight tentacles, a pair of eyes, structures resembling fins, and an apparent ink sac, the animal seemed like a dead ringer for living octopuses.

—— This Record-Breaking Octopus Fossil Isn’t an Octopus After All

Deep inside the inner ear are tiny calcium carbonate crystals called otoliths that swish around in fluid-filled sacs when we move, helping our brains detect acceleration.

—— Plants Can Hear the Sound of Falling Rain

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