She gave him a bright, determined smile which seemed unnatural.

她给了他一个快乐、坚定、看似不自然的微笑。

《柯林斯英汉双解大词典》

She gave me a bright smile.

她对我粲然一笑。

《牛津词典》

There was a smile on his lips, and his eyes were bright, probably with wine.

他微笑着，眼睛闪闪发亮，也许是因为他喝了酒。

youdao

She had a big,bright smile and long, flowing,golden hair.

VOA: special.2009.12.27

With bright eyes and an engaging smile, he says songs and stories were vital to survival when his family lived in igloos above the Arctic Circle.

VOA: standard.2010.02.19

The powerhouse runner flashed a bright smile as she entered the grandest athletic stage of all.

CNN: SHARE THIS

She may wear a bright smile, but the en garde stance is not all for kicks.

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Additionally, it was the first Kentucky Derby mount for 25-year-old jockey Gutierrez, who beamed with a wide, bright smile in the post-race news conference.

WSJ: I'll Have Another Wins Kentucky Derby