| 1. | Here was a career of usefulness opened before me !
这是摆在我眼前的一条与人为善的路！ |
| 2. | It is of the greatest usefulness .
它是极有用的。 |
| 3. | Usefulness includes the fact the negatives have been calibrated .
所谓有用，是指在底片上要有标度。 |
| 4. | There are always been some skepticism about the usefulness of subsidies on fertilizers .
一直有人对化肥补贴的效用持某种怀疑态度。 |
| 5. | In terms of practical rock slope engineering, these methods have limited usefulness .
对于实际岩石边坡工程来说，这些方法的实用性很有限。 |
| 6. | Here is an example of the usefulness of the concepts of angular impulse and angular momentum .
这有一个例子，可以说明角冲量和角动量概念的用途。 |
| 7. | A bank's decision must be based upon the relevance and usefulness of promotional campaigns .
银行决策必须取决于促销活动是否有的放矢和效果如何。 |
| 8. | The interaction of radiation with living organisms is a topic that grows daily in interest and usefulness .
辐射与生命机体的相互作用，是人们日益关心和有用的课题。 |
| 9. | I had made it clear that i wanted to get out of white hall and, perversely, this increased my usefulness .
我表明想要脱离白厅街，事与愿违的是这反而增加了我的用处。 |
| 10. | As soon as their season of usefulness is over, they become a burden upon the welfare resources of the community .
他们有用的季节一过，就成了这一地区福利资源的包袱。 |
