Someone who figures out how much something will cost or take to do.
The estimator gave us an idea of how much the repairs would cost.
评估师让我们了解了修理费用的大致数额。
A thing that helps measure or guess amounts, like distance or time.
The scientist used an estimator to guess how fast the water was flowing.
科学家使用估算器来猜测水流的速度。