| 51. | a historical event of no small importance |
| 重大的历史性事件
|
| 52. | an impressive historical example |
| 历史上令人难以忘怀的例子
|
| 53. | the earliest historical records of the diplomatic relations between the two countries |
| 两国外交关系最早的历史记载
|
| 54. | personal reminiscences about historical events |
| 个人对历史事件的回忆
|
| 55. | historical and antiquarian research |
| 历史文物研究
|
| 56. | a review of the historical experience |
| 对历史经验的回顾
|
| 57. | a historical review |
| 历史的回顾
|
| 58. | historical materialism |
| 历史唯物主义
|
| 59. | a wealth of historical matter |
| 大量的历史材料
|
| 60. | a historical lesson written in blood |
| 历史上血的教训
|