估

例句：

1. 1. We need to estimate thetime it will take for the project tobe completed.
   我们需要估计完成这个项目需要多长时间。
2. 2.The salesman estimated the price of thenew car to be $50,000.
   销售员估计新车的价格为5万美元。
3. 3. He guessed that shewas going to the party tonight.
   他猜测她今晚要去参加聚会。