a bright smile的用法和样例：
- She turned on a bright smile to fool her friends.
- As Brian entered Room No. 32, Peggy's face lit up with a bright smile.
- It's beginning,"said Butler with a bright smile to a comrade who was walking beside him.
- "Very true, Deerslayer," rejoined Judith, losing every trace of displeasure in a bright smile.
- She gave me a bright smile.
- A bright red welt rose on his arm.