1·There is good reason to doubt this.
有正当理由怀疑这件事。
—— 《柯林斯英汉双解大词典》
2·There seems no reason to doubt her story.
似乎没有理由怀疑她所说的话。
—— 《牛津词典》
3·His behaviour was so strange that I began to doubt his sanity.
他行为怪异，我有点怀疑他是否神智正常。
—— 《牛津词典》
4·Whether he will continue to be successful in future is open to doubt.
他今后能否继续获得成功值得怀疑。
—— 《牛津词典》
5·Li had no reason to doubt what Wang Jie said.
李没有理由怀疑王杰说的话。
6·How was it possible for us students to doubt what the teacher taught us?
我们学生怎么可能怀疑老师教给我们的东西呢？
7·Having spoken to many of the world's foremost AI researchers, I believe there is good reason to doubt that we will see AGI any time soon, if ever.
与世界上许多顶尖的人工智能研究人员交谈之后，我认为有充分的理由怀疑，如果真有通用人工智能的话，近期是否能看到通用人工智能的出现。
8·He began to doubt his ability.
他开始怀疑自己的能力。
9·This is a good reason to doubt the sun, but can it be proven?
这是怀疑太阳的一条很好的理由，但是它能被证明么？
10·I had no reason to doubt him.
我没有理由不相信他。
—— 《牛津词典》