He smiled at her.

他對她微笑。

She smiled at the enemy's threats.

對於敵人的威脅,她一笑置之。

He smiled at the thought of hearing his friend's jokes again.

一想到又要聽朋友的笑話,他笑了。

It often prevents an argument if you smile at people who are rude to you.

你若經常對衝撞你的人笑臉相待,常可避免爭吵。

What are you smiling at?

你在笑什麼?

The teacher smiled at my answer.

老師被我的答案逗笑了。

Not many of us can smile at grief.

我們當中很少有人對傷心事淡然處之。

She smiled at the compliment and turned away.

她對那種恭維一笑置之,轉身就走。