Unstable systems
[计] 不稳定系统
🧩 词语组成解析
n. 体制, 体系；制度；系统（system的复数形式）
🗣️ 情景例句
I have to go out and hand out fliers.
我要出去派传单。
Take one's courage in both hands.
勇往直前，敢作敢为。
Was that the 21st?
21号吗？