Sds
abbr. 学生争取民主社会运动（Students for a Democratic Society）
🗣️ 情景例句
When do we eat?
我们什么时候吃？
Sorry. Were you trying to sleep?
对不起。你想睡觉吗？
It's the library's. Please be more careful from now on!
“是图书馆的书。从现在起请你倍加小心！”