be connected to的音标？

These appliances should not be connected to power supplies.这些家用电器不应该接通电源。He asked to be connected to the central switchboard at London University.他要求转接到伦敦大学的电话总机。He asked to be connected to the central switchboard.他请求接到总...

与…有联系，与…有关联；与…连接...