uncertain

He was uncertain about his brother's intentions.

他对他兄弟的意图心中无数。

Scientists continue to study identical twins because they are uncertain about them and have many questions.

科学家们继续研究同卵双胞胎，因为他们对这个事情没有把握且有很多问题。

But many young researchers, especially those who have not been mentored in open science, are uncertain about whether to share or to stay private.

但许多年轻的研究人员，尤其是那些没有接受过开放科学指导的人，对于该分享还是保持隐私是不确定的。

The economic climate remains uncertain.

经济气候依然是不确定。

It may be possible for large-scale change to occur without leaders with magnetic personalities, but the pace of change would be slow, the vision uncertain, and the committee meetings endless.

如果没有具有磁性人格的领导人，可能会发生大规模的变化，但变化的步伐将是缓慢的，前景尚不确定，委员会会议也将没完没了。

Management is all about making difficult tradeoffs in conditions that are always uncertain and often fast-changing.

管理就是在不确定且经常快速变化的条件下做出艰难的权衡。

She has an uncertain temper.

她的脾气难以捉摸。

Meanwhile, if you want to buy a cheap house with an uncertain future, apply to a house agent in one of the threatened areas on the south coast of England.

与此同时，如果你想买一套廉价又无法预料其未来的房子，那就向英格兰南海岸某一个受威胁地区的房产经纪人提出申请。

Add a rapidly changing economy and an uncertain future to this 24/7 connectivity, and you've got a recipe for overwork, according to Phyllis Moen.

根据菲利斯·莫恩的说法，在这种“每周7天、一天24小时”的网络连接中，再加上快速变化的经济和变幻莫测的未来，你就很容易会过度劳累。

Joanna seemed no longer uncertain but became a confident professional woman.

乔安娜不再显得缺乏信心，而是一个充满自信的职业女性。

She was visibly trembling and her voice was soft and uncertain.

她明显在发抖，而且她的声音轻柔而不自信。