估错 meaning in English

miscalculation

Let me see this diamond again , replied the jeweller ; the first time you are often mistaken as to the value of a stone
让我再来看一下这颗钻石，珠宝商答道，宝石的价值第一次看的时候常常会估错的。
This may be the case , yet the government should accept liability for its forecasts , and should not shirk its responsibility once the estimates turn out to be inaccurate . lack of technical skills cannot be used as the only explanation
而事实上也可能是真的如此，但政府对未来前景所作的分析必须有一定的承担，不能到时估错了，就轻轻地诿过于技术的不足，作为唯一的解释。