Sgr
abbr. 无铀伽马；钠石墨反应堆（Sodium Graphite Reactor）
🗣️ 情景例句
If your pet turtle gets sick, take him to the vet.
如果你的宠物龟病了，带它去看兽医。
With time and patience the leaf of the mulberry becomes satin.
只要功夫深，铁杵磨成针。
But they suddenly became the parents of quintuplets,
但是他们出人意料生了个五胞胎，