词汇	Mid-and-old aged staff
释义	Mid-and-old aged staff 中老年教职工
随便看	underground paper underground parking underground parkingarea underground parking area underground parking-area underground parking garage underground parking lot underground parking plot underground parking space underground parking system underground part underground party underground pass underground passage underground passages/caves/streams underground passageway underground passgae underground passing through underground path underground pedestrian system underground pedestrian walk underground pedestrian walkway underground pedestrian walk ways underground penstock underground percolation