SAC
abbr. （美）战略空军司令（Strategic Air Command）；（英）空军一等兵（Senior Aircraftman）
例句
More than 750,000 have graduated from SAC, with many seeking employment in engineering, aviation, education and a wide variety of other professions.
超过75万人从SAC毕业，其中许多人在工程、航空、教育和其他各种领域中寻找工作机会。
The melon is kind of a large sac-like pouch, made up of fat tissue.
甜瓜是一种大的囊状袋子，由脂肪组织构成。
Chris has talked about pandas being an evolutionary cul-de-sac, and it's certainly unusual for a carnivore to take up herbivory.
克里斯曾经说熊猫是进化的尽头，而对于食肉动物来说，摄取食草动物是很不寻常的。
