• 存在疑问

1.

1. 怀疑：beinterestedin 对......感兴趣 |indoubt 怀疑 |in love 恋爱中

2. 有怀疑：247in consequence 因此; | 248indoubt 有怀疑 | 249in effect (实质上,实际上)它在句中一般不需要用逗号隔开;

3. 不确定的,可怀疑地：on the dot准时地 |indoubt不确定的,可怀疑地 | nodoubt确定地,我确信,我 想;很可能,公认地

4. in doubt的解释

4. 拿不准：I have nodoubt of your ability.我相信你的能力. |indoubt 拿不准 | beyonddoubt; withoutdoubt 无疑地

His intellect and mental agility have never been in doubt.

他的才智和机敏从未受到怀疑。

When in doubt, call the doctor.

如有疑问，请联系医生。

The outcome was still in doubt.

结果仍不确定。

His inclusion in the team is in doubt.

他是否能被选入这个队还未定案。

I'm rather in doubt about his explanation of this question.

他对这个问题的解释我总是半信半疑.

His loyalty to his friends was never in doubt.

他对朋友的一片忠心从来没受到怀疑.

The guilt of the accused man was in doubt.

被告之罪有疑问.

She was in doubt whether she was right.

她对她是否正确拿不准.

The boy's honesty was never called in doubt.

那个男孩的诚实不容置疑.

Gross's skill in motivation looked in doubt when his side began the second half badly.

球队下半场开局不利，看来格洛斯给队员鼓劲的技巧值得怀疑。

A suggested explanation, so long as its correctness is still in doubt, is called a hypothesis.

提出来的解释, 只要它的正确性仍然有疑问, 便称为假说.

Five minutes from the end , the outcome of the match was still in doubt.

比赛只剩下5分钟了, 可是结局仍然难以预料.

When in doubt about the meaning of a word, consult a dictionary.

拿不准词义时, 查查词典.

Their acceptance of the contract is still in doubt.

他们是否接受那合同还说不准.

See a doctor when in doubt the illness you may have.

你怀疑患病时就要去看看医生.