•Government sources estimate a long-term 50% increase in rail fares.政府消息人士估计火车票价将有一个涨幅达50%的长期调涨。

•[+ (that)] They estimate (that) the journey will take at least two weeks.他们估计这次行程至少需要两周时间。

•[+ question word] It was difficult to estimate how many trees had been destroyed.很难估计有多少树被毁。

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•The number of people who applied for the course was 120 compared with an initial estimate of between 50 and 100.最初估计申请选修这门课程的学生也就是50到100人，可是实际上报名的有120人。

•We'll accept the lowest of three estimates for the building work.在对这项建筑工程的三个投标中，我们将采纳报价最低的那个。

•a conservative (= low) estimate保守估计

•a rough (= not exact) estimate粗略估计