I am sorry, but I am afraid she is somewhat younger than I thought.

对不起，恐怕她比我想象的年纪要小一些。

youdao

But I am afraid our boss will turn me down.

但是我害怕我老板会拒绝我。

youdao

But I am afraid it can never take the place of the old one.

但是，新书恐怕不能代替那本旧书吧！

youdao

But I am afraid I am not a sociologist, nor am I an economist.

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That Windows 8 is less bloated than Windows 7 is a good hypothesis, but I am afraid, that is not the reason.

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But I am afraid that would be to perpetuate the kind of lazy sentimentalism that has seen so much taxpayer's money wasted over the last decade.

BBC: UK Politics