| 71. | come up against a series of problems |
| 碰到一系列问题
|
| 72. | a recent series of bomb scares |
| 近来一系列的炸弹恐慌
|
| 73. | issue a series of memorial stamps |
| 发行一套纪念邮票
|
| 74. | organize a series of lectures |
| 组织一系列讲座
|
| 75. | raise a series of questions |
| 提出一系列问题
|
| 76. | suffer a series of misfortunes |
| 遭到一连串的不幸
|
| 77. | make a careful series of scientific observations of |
| 对…进行一系列细致的科学观察
|
| 78. | in a continued series |
| 连续的
|
| 79. | the first series |
| 第一辑
|
| 80. | a long series of lectures |
| 长期连续的讲座
|