An estimate that is or proves to be too low.
低估估计不足，轻视
I underestimated the cost of the journey.
我对旅费估计不足。
We should not make light of the situation [his illness].
我们不要对形势[他的病情]估计不足。
We should not make light of his illness.
我们不要对他的病情估计不足。
It is a point that has been underestimated by many people in the past.
这一点，过去许多人是估计不足的。
We have never underestimated this trend.
对此，我们从来没有估计不足。
This is due to the enemy's underestimation of China and also to his shortage of troops.
这是由于敌人对中国估计不足而来的，也有他自己兵力不足的原因。
underestimate the cost, danger, difficulty, etc of the expedition
对此次考察的费用、 危险、 困难等估计不足
a serious underestimate of losses on the Stock Exchange
对在证券交易所中遭到的损失严重估计不足.
But we had not anticipated all the difficulties, we only knew that Northerners would be unaccustomed to certain things in the South.
原来我们估计不足，只知道北方人到南方有不习惯的问题，
It will be a very great mistake to overestimate the enemy's strength and underestimate the strength of the revolutionary forces.
对于敌人力量的过高估计和对于革命力量的估计不足，将是一个极大的错误。
It will be a very great mistake to underestimate the significance of the victory of World War II.
对于第二次世界大战的胜利的意义估计不足，将是一个极大的错误。
We do not favour overstressing the importance of literature and art, but neither do we favour underestimating their importance.
我们不赞成把文艺的重要性过分强调到错误的程度，但也不赞成把文艺的重要性估计不足。
I firmly believe that much of bad software comes from a lack of imagination over how software might be used in ways different than those we anticipate.
我一直认为，对软件不同的使用方式超出我们期望的估计不足导致了许多不好的软件。
Naturally, in the process of carrying out these policies many bad influences from the West are making themselves felt in China. We have never underestimated this trend.
当然，改革开放必然会有西方的许多坏的影响进来，对此，我们从来没有估计不足。
Channel Estimation and Equalization of OFDM Systems with Insufficient Cyclic Prefix
CP不足情况下OFDM系统信道估计与均衡
BP estimated that the world had less than 41 years' worth of oil consumption left.
英国石油估计，全球可供消耗的石油储量已不足41年。
As for our side, we must not exaggerate the extent of our past victories, but neither should we fail to take full account of their effect.
对自己方面，不可夸大过去胜利的程度，但也决不可不足够地估计到过去胜利的影响。