It’ s difficult to estimate the cost of making your house safe. 很难估算维护房屋安全的费用。

The Antarctic ice cap is estimated to contain 90% of the world’ s fresh water. 南极的冰盖估计储存着世界上90％的淡水资源。

estimate sth at sth The total cost was estimated at £600,000. 总花费估计有60万英镑。

+(that) We estimate that 20 per cent of the harvest has been lost. 我们估计损失了20％的收成。

+how much/many It is impossible to estimate how many of the residents were affected. 要估计出有多少居民受到了影响是不可能的。

An estimated 300,000 people came to the demonstration. 估计有300000人参加了游行。