未来的事情很难臆测大家都心中无数: the future is so uncertain that one man's guess is as good as another's
Example Sentences:
1.
I 'm not sure what will happen next . 下一步怎么样，我心中无数。
2.
I 'm not sure of his ability to cope with this . 我对他应付此事的能力还心中无数。
3.
I 'm not sure about his ability to cope with this . 我对他应付此事的能力还心中无数。
4.
I still had trepidations about their ability to maintain security . 我对他们维持治安的能力还是心中无数。
5.
The future is so uncertain that one man's guess is as good as another's . 未来的事情很难说，大家都心中无数。
6.
In such a vacuum they produce merchandise that is both unwanted and inferior . 在这样一种心中无数的状况下，他们生产的商品既无人需要，质量又低。
7.
They have no definite ideas about their work , so they constantly vacillate between " left and right " thinking , sometimes falling victim to right conservatism , their ideas lagging behind reality , sometimes rushing ahead impetuously and placing undue emphasis on quantity and speed , in an attempt to go beyond what is actually possible 他们对自己的工作心中无数，常常“左右”摇摆，有时表现为右倾保守，思想落后于实际，有时又表现为急躁冒进，贪多求快，超过实际的可能。
