Perfidiousness
背信弃义\\n叛卖
📖 牛津释义
perfidiousness
n [U].
🗣️ 情景例句
I have a new math program, and I want to learn how to use it.
我有一个新的数学程式 我想学习怎样用。
No regrets.
无怨无悔。
In the evening, the children come home from school.They arrive home early.
傍晚，孩子们放学回家。他们到家很早。