This is the 2731st most frequent Chinese word.
切断
"Cut off" or "sever."
切断 is used to describe the action of cutting off or disconnecting the power source deliberately for a specific purpose.
他切断了电源以进行维修。
He cut off the power supply for repairs.
切断 is used metaphorically to denote the interruption of communication or connection caused by external factors.
由于暴风雨，村里切断了与外界的联系。
Due to the storm, the village was cut off from the outside world.
切断 refers to ending the telephone call prematurely and is a negative action to avoid in this context.