| 例句 |
We use x as the symbol for an unknown quantity.我们用ｘ表示一个未知数。They could win if everyone plays his best, but that's a big if. 要是每个人都竭尽全力，他们就能获胜，但那是个很大的未知数。The country's economy is floundering and the future is uncertain.该国的经济正处于困境，未来还是未知数。It is unclear whether the meeting will take place as planned.会议是否会如期举行还是未知数。It is still unclear whether dotcom companies will continue to thrive in the long-term future.网络公司将来是否能够长期繁荣下去，仍是个未知数。The trip to Moscow is still up in the air.去不去得成莫斯科还是未知数。The new law is a jump into the unknown.这部新法律效果如何还是个未知数。Whether the project will be a commercial success is still uncertain.这一项目能否赚钱还是个未知数。The unknown number can be calculated from the data.透过已知数可以算出未知数。To her the outside world was a totally unknown quantity.对她说来，外部世界完全是个未知数。What the weather will be like on the day is, as always, the great unknown.到时天气会怎样一向都是个未知数。The length of the war is one of the biggest unknowns.战争要持续多久是最大的未知数之一。The long-term effects of the drug are still an unknown.这种药品的长期效果还是个未知数。The future is uncertain.未来如何是个未知数。The company is facing a doubtful future.公司的未来还是未知数。The outcome was in doubt until the final seconds of the game.不到最后时刻，比赛的结果都还是未知数。He is an unknown quantity for his rivals.对于对手们而言，他是个未知数。To Margaret the outside world was an unknown quantity.对玛格丽特而言，外面的世界是个未知数。 |