rib

n.肋骨

rheumatism, rheumatoid, rheumatoid arthritis, rhinestone, rhino, rhinoceros, rhizome, rhododendron, rhomboid, rhombus, rhubarb, rhyme, rhymed, rhyming slang, rhythm, rhythm and blues, rhythm method, rhythmic, rhythmically, RI, rib-cage, rib-tickling, ribald, ribaldry, ribbon, ribbon development, riboflavin, rice, rice-paper, rich, riches, richly, richness, Richter scale, rick, rickets, rickety, rickshaw, ricochet, rid,