Some people, however, are still doubtful of the new rules.

然而，一些人仍然对新规表示怀疑。

Cesar is doubtful of the advice Olga is giving him.

塞萨尔对奥尔加给他的建议表示怀疑。

From which Grant deduced that Hopkins was doubtful of his reception.

格兰特从中推断出霍普金斯对他的接待表示怀疑。

She was a little doubtful of that, but the cave interested her, and so did it Cap'n Bill.

她对此有点怀疑，但这个洞穴让她很感兴趣，比尔船长也很感兴趣。

Today they are still doubtful of the Europe integration plan, thus they are reluctant to allow pound to be integrated into Euro Dollars.

直到今天, 他们对欧洲的统一计划仍然心存疑虑，因而, 他们不愿意把 英镑纳入欧元计划之中。

Zenobia, though doubtful of the girl's efficiency, was tempted by the freedom to find fault without much risk of losing her; and so Mattie came to Starkfield.

芝诺比亚虽然对这个女孩的效率表示怀疑，但还是被挑剔的自由所吸引，而不必冒失去她的风险。于是玛蒂来到斯塔克菲尔德。

Yes, China is a big country with a large population rich resources and a comparatively low level of wages and salaries, However, the problem is that we're still doubtful of investment in China.

是的。中国是一个大国，人口众多，资源丰富，而且工资水平低。然而问题是我们仍然对在中国投资表示怀疑.

I was so doubtful of myself now, and put so much trust in him, that I could not satisfy myself whether I ought to refer to it when he did not.

我现在对自己如此怀疑，对他如此信任，以致于当他不这样做时，我无法确定是否应该提及它。

Past experience had made Mary equally sensible to such claims; but she was jealous of her husband's morning hours, and doubtful of his having given any one the right to intrude on them.

过去的经验使玛丽对这种说法同样敏感。但她嫉妒她丈夫早上的时间，怀疑他是否给了任何人打扰他们的权利。

Clara stood close by him, with her cloak in both hands ready to throw about her shoulders, and a strange look in her eyes, as if she were half hopeful, half doubtful of her father.

克拉拉站在他身边，双手拿着斗篷，随时准备披在肩上，眼中有一种奇怪的神情，仿佛她对父亲半是希望，半是怀疑。

" On the other hand, " said Lydia, " Capricorn people are often melancholic, doubtful of themselves, and perverse. On a lower plane still, they are gloomy, miserly, and deceptive" . But Jammy was not listening.

“另一方面，”莉迪亚说，“摩羯座的人往往忧郁、怀疑自己、任性。在较低的层面上，他们是阴郁、吝啬和欺骗的。”但是杰米没有在听。

This was cold comfort. Somehow, without Tommy, all the savour went out of the adventure, and, for the first time, Tuppence felt doubtful of success. While they had been together she had never questioned it for a minute.

这是冰冷的安慰。不知何故，没有汤米，所有的乐趣都从冒险中消失了，而且，塔彭丝第一次对成功感到怀疑。他们在一起的时候，她一分钟也没有质疑过。

On the flip side, people with more knowledge and experience in  an area are aware of the complexity, vastness, and difficulty involved in being right or  successful, and thus, they are likely to be more doubtful of their abilities.

另一方面, 在某个领域拥有更多知识和经验的人意识到正确或成功所涉及的复杂性、广度和难度, 因此, 他们可能会更加怀疑自己的能力。