单词	around
释义	请查阅round
随便看	rolls roll sb over roll (somebody) over roll somebody over roll something back roll something down roll something ↔ back roll something ↔ down Rolls-Royce rolls royce rollsroyce roll sth back roll sth down roll to a stop roll up roll up rollup roll-up roll-ups roll with the punches roll your r's roly-poly rolypoly roly poly ROM 宋词赏析宋词赏析宋词赏析宋词赏析宋词赏析宋词赏析宋词赏析宋词赏析宋词赏析宋词赏析直流機直流法直流燃焼室直流発電機直流起電力直流送電直流配電直流電位差計直流電信直流電動機