Orasa
abbr. operational research and system analysis 操作研究與系統分析
??? 情景例句
No. I want to leave it in Chicago.
不。我想把它留在芝加哥。
It never rains but it pours.
禍不單行。（不鳴則已，一鳴驚人。）
Nonsense!
鬼話！