计算者

例句：

1. 1. The computer expert was able to fix the software problem quickly.
   这位计算机专家很快就解决了软件问题。
2. 2. The math teacher is always using a calculator in class.
   数学老师总是在课上使用计算器。
3. 3. The engineer calculated the cost of the new project before starting work.
   工程师在开始工作前计算了新项目的成本。