grinningly

例句：

1. 1.She grinned at the sight of her old friend.
   她看到老朋友时，开心地笑了。
2. 2. They grinned at each other, feeling relieved.
   他们互相微笑，感到松了一口气。
3. 3. The child grinned at his mother's praise.
   孩子对他母亲的赞扬报以微笑。