不确定

I'm not sure if you folks were at the airport," he said."

我不确定你们是否在机场，"他说。"

I don't know for certain when he will come.

我不确定他什么时候来。

In this city,nothing is for certain.

在这个城市里所有事都是不确定的

The detailed representation of cascade hydro plants, which includes water volume, water inflow, water discharge, forebay elevation, tailrace elevation and effective water head, is studied in the proposed strategy. The uncertainties, such as water inflows, electricity prices and unit status are taken into account as well.

模型全面分析了蓄水量、弃水量、前池水位、放水路水位、发电水头之间的关系，并考虑了电价、入库径流量、机组运行状况等不确定因素对梯级水电站短期优化调度问题的影响。

George: We might go to protest a fox hunt, but we aren't sure we'll be able to leave town.

艾美：我们可能会去参加一场抗议猎狐活动，不过我们还不确定是否能出城。

The size of the financial risk fluctuates from head to foot with change of the uncertain factor of economy.

财政风险的大小随着经济不确定因素的变动而上下波动。

"But I'm far from ready to get out, since I don't know what to do with my life yet."

"但是，我还没有准备好走出去，因为我还不确定我这一生该干什么。"

A Frost has a LOT of RNG. I think it's not necessary.

冰系 有很多不确定因素，我认为这没必要。

We live in a sea frothing with unlimited possibilities.

在我们的生活中有许多的不确定因素。

The race to full recovery is likely to be long, hard and uncertain.

迈向全面复苏的过程，很可能是漫长、艰难而不确定的。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。