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1·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》

2·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》

3·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。

4·Were they uncertain of what to say?

他们不确定要说些什么吗？

5·Nobody wants to be uncertain of him.

没有人想变成不确定的人。

6·You will be uncertain of your feelings.

你不确定自己的感情；

7·You will be uncertain of the outcome and eager to reach it.

你不能确知它的结果但是渴望知道。

8·He walked out, feeling rather uncertain of himself. He was very cold and frightened.

他走了出来，实在不知道自己该怎么办才好。他感到很冷，很害怕。

9·Finally, still uncertain of what to do, I set a March 1 deadline to announce my decision.

我最终还是无法确定自己该不该参选，便把3月1日作为宣布决定的最后期限。

10·I think may be the most uncertain of next year, in 2005, mainly depend on the land policy.

我想可能是最不确定的明年，在2005年，主要取决于土地政策。