Sgr
abbr. 无铀伽马；钠石墨反应堆（Sodium Graphite Reactor）
🗣️ 情景例句
Things are never as bad as they seem.
事情往往不像看上去的那么糟。
I'm a graduate of Yale University, I have an M.S.degree.
我是耶鲁大学的毕业生，我有理学硕士学位。
The lower gun-ports were now below water and the inrush sealed the ship's fate.
下层炮眼已淹没在水里，涌进船舱的水给瓦萨号带来了难以逃脱的厄运。