Roman candle

tubular firework that emits coloured sparks 罗马烟火筒（能喷发彩色火花）.

roll-up, rolled gold, rolled oats, roller, roller bandage, roller towel, roller-blade, roller-coaster (Brit also switchback), roller-skate (also skate), roller-skating, rollicking, rolling stone, rolling-mill, rolling-pin, rolling-stock, rollmop, Rolls-Royce, roly-poly, ROM, Roman, Roman Catholic (also Catholic), Roman nose, Roman numerals, Romance, Romanesque, Romania, Romano-, romantic, romantically, romanticism, romanticist, romanticize, romanticize, romanticise, Romany, Rome, romp, rompers, Ronald Reagan, rondo, rontgen,