Duality principle
[计] 对偶原理
🧩 词语组成解析
n. 二元性\\n[化] 二象性; 双偶性
🗣️ 情景例句
I'm sorry, I don't really understand.
对不起，我真的听不懂。
Guess!
猜猜看！
and the profits from the exhibition were used to build museums and colleges.
博览会的赢利用来建造博物馆和高等学校。