干净: clean, neat...
极少数: extremely few, a small minority...
声称: to claim, to state, to proclaim, to assert...
滚动: to roll, (to do sth) in a loop, to scroll (computing), to progressively expand (economics), to rumble (of thunder)...
比比皆是: can be found everywhere...
枢纽: hub (e.g. of traffic network), hinge, pivot, fulcrum...
收拾: to put in order, to tidy up, to pack, to repair, (coll.) to sort sb out, to fix sb...
过后: after the event...
偷偷: stealthily, secretly, covertly, furtively, on the sly...
不以为然: not to accept as correct (idiom); to object, to disapprove, to take exception to...