Perfidiousness
背信弃义\\n叛卖
📖 牛津释义
perfidiousness
n [U].
🗣️ 情景例句
Why do you plan to leave the present job?
你为什么打算离开现在的工作？
What time are you going to get up tomorrow morning?
你将在明天早上什么时间起床？
This was indeed the case.
但事实上确有此人。