1, switch, network buzzwords. The word originally meant to turn off the switch, but now it means it's over and cold. I pulled the switch.

2. Power failure: refers to the measures of disconnecting the circuit breaker of the power supply line in the power system and forcibly stopping the power supply. When the specific power consumption environment cannot meet the full load demand, the power supply in a region or part of the place is interrupted. It usually happens in summer. (The specific behavior is to turn off the power switch in a certain area at the power supply. Will not be turned off until power is needed)