I'd hate to be the one to disillusion him.

我不愿做打破他梦想的人。

《柯林斯英汉双解大词典》

I hate to disillusion you, but not everyone is as honest as you.

我实在不愿把实情告诉你，但并非人人都像你那样诚实。

《牛津词典》

I hate to disillusion him.

我真不想使他的幻想破灭。

youdao

Winston, I'm sorry to disillusion you, doesn't count journalists among his greatest fans.

BBC: The BA Science Festival

Anger has turned to disillusion.

ECONOMIST: Algeria��s army picks its man

But Portugal lacks fringe politicians ready to benefit from disillusion with the mainstream.

ECONOMIST: Portugal and the euro