He looked at me gravely and thoughtfully.

他严肃地看着我，若有所思。

The guard bowed gravely to him.

警卫庄重地向他鞠了一躬。

Instead of solving the problem, his policy has gravely affected the economy.

他的政策不仅没有解决问题，反而严重影响了经济。

They had gravely impaired the credibility of the government.

他们已严重地损害了政府的信用。

"I think I've covered that business more than adequately," he said gravely.

“我认为我已经把那件事搞得够详细的了，”他一脸严肃地说。

Both animals nodded gravely.

两只动物严肃地点头。

"Of course," the Dodo replied very gravely.

“当然了。”渡渡鸟非常严肃地回答。

"It's a bad sign," said Aunt Polly, gravely.

“这是个坏兆头。”波莉姨妈严肃地说。