Aiu
[计] 抽象信息单元
🗣️ 情景例句
They have nice things, but they've very expensive.
它们的东西不错，但很贵。
When I left, he was at home.
当我离开的时候，他回家了。
I can't understand why he is being so selfish. He isn't usually like that.
我不明白他此刻怎么这么自私。他平时不这样。