1. river - 河流
2. ruler - 尺子
3. rule - 规则
4. run - 跑
5. runway - 跑道
6. row - 划
7. rubber - 橡皮
8. rose - 玫瑰花
9. Rome - 罗马
10. reporter - 记者
11. red - 红色
12. read - 读
13. rice - 米饭
14. rain - 雨
15. room - 房间
16. really - 真的
17. robot - 机器人
18. road - 公路
19. right - 对的
20. radio - 收音机
21. race - 比赛
22. racecar - 赛车
23. racetrack - 赛马场
24. rabbi - 犹太教的法学博士或法师
25. rabbit - 兔子
26. rabble - 乌合之众或暴民
27. rabid - 患狂犬病或失去理智的
28. rabies - 狂犬病
29. real - 真的或真实的
30. root - 根
31. rest - 休息
32. risk - 风险
33. robber - 强盗
34. robberies - 强盗行为
35. robber's - 强盗的
36. robber's-gun - 强盗的枪
37. robber's-mask - 强盗的面罩
38. robber's-hand - 强盗的手
39. robber's-knife - 强盗的刀
40. robber's-pocket - 强盗的口袋
41. robber's-bag - 强盗的包
42. robber's-case - 强盗的箱子
43. robber's-case-key - 强盗的箱子钥匙
44. robber's-case-key-ring - 强盗的箱子钥匙环
45. robber's-case-key-chain - 强盗的箱子钥匙链
46. robber's-case-key-holder - 强盗的箱子钥匙链扣
47. robber's-case-key-holder-clip - 强盗的箱子钥匙链扣夹
48. robber's-case-key-holder-clip-on - 强盗的箱子钥匙链扣夹式
49. robber's-case-key-holder-clip-on-with-safety-pin - 强盗的箱子钥匙链扣夹式带安全别针
50. robber's-case-key-holder-clip-on-with-safety-pin-and-key - 强盗的箱子钥匙链扣夹式带安全别针和钥匙
51. robber's-case-key-holder-clip-on-with-safety-pin-and-key-ring - 强盗的箱子钥匙链扣夹式带安全别针和钥匙环
52. robber's-case-key-holder-clip-on-with-safety-pin-and-key-ring-and-key-chain - 强盗的箱子钥匙链扣夹式带安全别针、钥匙环和钥匙链
53. robber's-case-key-holder-clip-on-with-safety-pin-and-key-ring-and-key-chain-and-key-ring-clip - 强盗的箱子钥匙链扣夹式带安全别针、钥匙环、钥匙链和钥匙环夹
54. robber's-case-key-holder-clip-on-with-safety-pin-and-key-ring-and-key-chain-and-key-ring-clip-and-safety-pin - 强盗的箱子钥匙链扣夹式带安全别针、钥匙环、钥匙链、钥匙环夹和安全别针
55. robber's-case-key-holder-clip-on-with-safety-pin-and-key-ring-and-key-chain-and-key-ring-clip-and-safety-pin-and-key-ring - 强盗的箱子钥匙链扣夹式带安全别针、钥匙环、钥匙链、钥匙环夹、安全别针和