jam somebody's/the switchboardTCTif telephone calls jam the switchboard of an organization, so many people are phoning the organization that it cannot deal with them all 使(某人的)电话总机应接不暇 Viewers jammed the switchboard with complaints. 观众打来的投诉电话令总机应接不暇。
jam somebody’s/the switchboard• But look at the text, calls jammed our switchboard all day.• Residents jammed the switchboard of city authorities asking whether it was safe in the area.
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