plump(sb/sth)down
—phrasal verbwithplumpverb[T]uk/plʌmp/us/plʌmp/
informaltositdownsuddenlyandheavily, or to put anobjectorchilddownsuddenlyand without takingcare
重重地坐下；（随意地）把…重重地放下
Sheplumpeddown next to meonthesofa.她挨着我一屁股坐在沙发上。
Herushedin andplumpedhimselfdowninachair.他冲进房间，一屁股坐到椅子上。
Joansatdown at thefrontof thebus, andplumpedherbagsdown beside her.琼在公共汽车前部坐下，把行李放在身边。