| 1. | Economics is one of the subjects which concern human activities .
经济学是有关人类活动的学科之一。 |
| 2. | All human activity springs from two sources: impulse and desire .
人类的一切活动都发生于两个来源：冲动与愿望。 |
| 3. | During this same period, other human activities will exert a variety of stresses on forest eco-systems .
在同一时期内，其他人类活动将给森林生态系统带来种种胁迫。 |
| 4. | But disorder is part of all truly creative human activities so this should not make us sad .
但是，漫无次序是人类真正创造性活动的组成部分，因此它不应该使我们过份担心。 |
| 5. | Culture is no longer the expression of a supra-historical force but the product of human activity through labour .
文化不再是某种超历史力量的表现，而是人类活动（通过劳动）的产物。 |
| 6. | They can also be a result of human activities
地震也有可能是人类的活动造成的。 |
| 7. | Does human activity improve or damage the earth
人类活动是改善还是破坏了地球？ |
| 8. | The cultural fulcrum of positivism in human activities
看材料文化的演进形式 |
| 9. | Human activities have expanded so much in the 20th century
为扩大商机，我们将竭尽全力。 |
| 10. | Officials believe the fire was started by a human activity
官方认为火灾是人为因素造成的。 |
