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1·He shook his head regretfully.

他遗憾地摇了摇头。《柯林斯英汉双解大词典》

2·Regretfully, some jobs will be lost.

遗憾的是有些人将会失去工作。《牛津词典》

3·'I'm afraid not,' he said regretfully.

他遗憾地说：“恐怕不行。”《牛津词典》

4·Regretfully, mounting costs have forced the museum to close.

遗憾的是，费用不断增加，博物馆不得不关门。《牛津词典》

5·I can't think of a thing, he said regretfully.

“我什么也想不出来。”他遗憾地说。

6·I may be obliged to have a tantrum, said Colin regretfully.

“我可能得发脾气了。”科林遗憾地说。

7·Emma shook her head regretfully.

埃玛遗憾地摇了摇头。《牛津词典》

8·He sighed regretfully.

他懊丧地叹了口气。《牛津词典》

9·Bill Hutchinson said regretfully.

比尔·赫群森遗憾地说。

10·But regretfully, I cannot stop it.

但是很，我不能让一切停止。