Binarity
n. 成双性；二进制
🗣️ 情景例句
Why can't you do both?
为什么不能两样一起做？
He is on the phone.
他正在通话。
He was a shrewd and wealthy businessman, but most people in the town hardly knew anything about this side of his life.
他是个精明能干、有钱的商人，但镇上大部分人对他生活中的这一个方面几乎一无所知。