I'm still uncertain of my feelings for him.

我仍不能肯定我对他的感情。

《牛津词典》

They were uncertain of the total value of the transaction.

他们不清楚这笔交易的总额。

《柯林斯英汉双解大词典》

In a sports team each plays a clear role, and there are few occasions when members are confused or uncertain of their roles.

在运动队中，每个队员都有清晰的角色定位，队员们很少对自己的角色感到迷惑或不明确。

youdao

No wonder that with an uncertain voice coming out of the White House, Americans will have their doubts,".

VOA: standard.2009.09.22

The conclusion of this parable seems so violent perhaps because the lesson to be learned from the parable is so uncertain.

这个故事的结尾看起来太残酷了,可能因为这个寓言想要教给我们的东西太不确定。

耶鲁公开课 - 弥尔顿课程节选

The uncertain status of divine providence here, I think, is made clear by its figuration as a moon.

这里神圣的天意的不确定的地位，被月亮这个比喻表现的更为清晰。

耶鲁公开课 - 弥尔顿课程节选

Mr. Weiner said he was uncertain of the role his wife would play in his campaign.

WSJ: Huma Abedin Lends Big Assist to Her Husband

For the moment, the Yankee manager is nervously waiting, and uncertain of the details.

WSJ: Yankee Reliever David Robertson Injured in Fall

But the critical judgment is whether uncertain risks of uncertain magnitude outweigh the benefits of doing more.

ECONOMIST: Quantitative easing