1、Sleep tight.
睡得紧，结实。(字面意思)
引申为，睡得踏实，好好睡一觉。
2、See you in the morning.
早上见。
(除了单独使用，也可以搭配)
Good night. see you in the morning.
3、Pleasant dreams.
sweet dreams = pleasant dreams. 美梦
