Sometimes I really doubt whether there is love between my parents.

有时候，我真的怀疑父母之间是否有真爱。

youdao

I still doubt whether the practical value of this project really exists.

我仍然怀疑这个项目是否有实际价值。

youdao

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

His shooting,and the upheaval that has followed,casts doubt on whether elections rescheduled for January will be held.

VOA: standard.2009.12.07

You kind of doubt whether vegetarians would eat human flesh.

你不相信素食者会吃人肉。

耶鲁公开课 - 新约课程节选

But climate change skeptics have seized on the recent theft of thousands of private e-mail messages from computer servers at a British climate research center to cast doubt on whether global warming is as serious as it has been made out to be.

VOA: standard.2009.12.09

This made many Liberians doubt whether a government under his command would stay sufficiently clean.

ECONOMIST: A milestone, perhaps, for Liberia and Africa | The

But repeated disappointments have led some experts to doubt whether antisense makes any sense at all.

FORBES: Antisense and Sensibility

Many people doubt whether the new council will dare challenge the emir or his ministers.

ECONOMIST: Qatar