quietly

adv: This car engine runs very quietly. 这辆汽车的发动机噪音很小. * She died quietly in her bed. 她在床上安然去世.

quick-freeze, quick-minded, quick-tempered, quick-witted, quicken, quickie, quicklime, quickly, quickness, quicksand, quicksilver, quickstep, quid, quid pro quo, quiescence, quiescent, quiet, quieten, quietism, quietist, quietness, quietude, quietus, quiff, quill, quilt, quin, quince, quincentenary, quinine, Quinquagesima, quinsy, quintessence, quintessential, quintessentially, quintet, quintuplet, quip, quire, quirk,