"Aye," said Martha with a cheerful grin.

“呀。”玛莎开心的咧嘴笑着说。

youdao

She was relieved to see his face light up with a boyish grin.

看到他脸上显出孩子气的笑容，她松了一口气。

《柯林斯英汉双解大词典》

'No,' he said with a grin.

“不。”他咧嘴笑了笑说。

《牛津词典》

Silverio and Antonio grin with pleasure.

BBC: Sardinia, land and sea

Marc Berman, a lanky graduate student with an easy grin, speaks about his research with the infectious enthusiasm of a freshman taking his first philosophy class.

NEWYORKER: Don��t!

That means Microsoft customers will generally react to damage to their systems and bottom line with a grin-and-bear-it attitude, because it's easier to stick with what you have than rip out the works and start over.

CNN: Linux users unscathed by ILOVEYOU