I doubt whether Alyssa will accept the invitation the day after tomorrow.

我怀疑艾莉莎是否会在后天接受邀请。

youdao

He is so closely hemmed in on all sides that I doubt whether he could escape even if he grew a pair of wings.

密密层层的天罗地网，我看他插翅难飞。

《新英汉大辞典》

I doubt whether he is still alive.

我怀疑他是否还活着。

youdao

However, I doubt whether such ideas will cut much ice with the closet elitists.

BBC: Staying-on: Is it a good idea?

Speaking as one who lived in Asia for a decade, I doubt whether these values are held as strongly outside the U.S. and (to a lesser extent) Europe.

FORBES: Wikileaks' Friends Want to Borrow Your Money

"I doubt whether we should have a system whereby the quality of the bar drives student choice and student choice drives the survival of our institutions in higher education, " she said.

BBC: Reforms 'could cause some universities to fail'