• 笨重地坐下

Lumpan伦潘lumpn.块；团；笨重的人；瘤v.使成块；形成团状；归并；(笨重地)移动lumplike anything small and roundish块状颗粒lumped parameter measuring equipment集总参数测量设备Lump-sum Payment of Educational Fees“一费制”lumped-parameter structure mathematical model集总参数数学模型lumped-constant-tuned heterodyne-frequency meter[电] 集总常数调谐外差频率计