| 81. | reduce the powers of intellectual activity |
| 降低智力活动的能力
|
| 82. | a centre of business activity |
| 商业活动中心
|
| 83. | the manifold spheres of human activity |
| 人类活动的种种领域
|
| 84. | put a stay upon sb.'s activity |
| 制止某人的活动
|
| 85. | as an initiative step in this activity |
| 作为这一活动的第一步
|
| 86. | a factory humming with activity |
| 忙碌的工厂
|
| 87. | within the zone of submarine activity |
| 在潜水艇活动的区域内
|