Suddenly smiled, a quick, beautiful smile.But her eyes were cold.

她突然笑了一下，一个转瞬即近逝美丽的微笑。可她的眼神却是冷冷的。

youdao

He smiled suddenly, exposing a set of amazingly white teeth.

他突然一笑，露出一口雪白的牙齿。

《牛津词典》

I shouted out, "Let me alone." But he only smiled, "Not yet." Then I was put on a wheel which was moving, and suddenly I was pushed to move around and around.

我大声喊道：“让我一个人待着。”但他只是微笑着说：“还不行。”然后我被放在一个移动的轮子上，突然之间我被推着走来走去。

youdao

So why have the gods, or at least Mr Jospin, suddenly smiled on him again?

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Fumiko, from across the room, smiled, as though she suddenly understood something.

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And when they smiled back, which they did suddenly, they displayed rows of perfect teeth.

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