这台新打印机操作起来非常安静。

The new printer ___operates very quietly.

他正在学习如何操作这台复杂的机器。

He is learning how to ___operate this complicated machine.

医生们正在准备为病人进行紧急手术。

The doctors are preparing to ___operate on the patient in emergency.

这家银行在全球许多国家开展业务。

This bank ___operates in many countries around the world.