拖放

拖放	tuō fàng	drag-and-drop (computing)
拖	tuō	variant of 拖
拖	tuō	to drag / to tow / to trail / to hang down / to mop (the floor) / to delay / to drag on
放	fàng	to put / to place / to release / to free / to let go / to let out / to set off (fireworks)