nighty-night

例句：

1. 1.Good night, sweet dreams!
   晚安，好梦！
2. 2.I'll see you tomorrow night.
   我明天晚上见。
3. 3. Saying "Nighty-night" to my mom is a tradition we both enjoy.
   对我妈妈说“晚安”是我们共同享受的传统。