遗憾的是

Unhappily, he never saw that girl again.

遗憾的是他再有见到过那女孩。

It's a pity that the spitbox in the pit was hit and split.

遗憾的是西方经济学论文坑内的痰盂被打裂.

Unfortunately,no questions from the audience broke the continuity of his harangue.

令人遗憾的是,有听众提出问题来打他的高谈阔论。

One of many sadnesses in his life was that he never had children.

他一生中的许多遗憾之一是有子女。

Regretably, I cannot watch the lively scene in the meeting and the presents distributed by companies present at the meeting .

遗憾的是未能看到此次会的火爆场面和参发的赠品。