| 1. | With a soaring population and a stock of natural resources that is shrinking fast, it is hard to be optimistic .
随着人口剧增和自然资源储存的迅速减少，很难抱乐观态度。 |
| 2. | During the 1960s, scientists were optimistic that malaria could be wiped out, and in fact, great progress was made .
在六十年代，科学家们对于消灭疟疾还是乐观的，事实上也取得了很大的进展。 |
| 3. | I am optimistic about the outlook of our country
我对我们国家的前景持乐观态度。 |
| 4. | But there are things to be optimistic about
不过有些事情还是要从好的方面来看 |
| 5. | A healthy man , as a general rule , is optimistic
一个健康的人一般都是乐天的。 |
| 6. | On one hand , we have reasons to be optimistic
一方面，我们有充分的理由乐观。 |
| 7. | But there are things to be optimistic about
不过有些事情还是要从好的方面来看 |
| 8. | The stockholders are optimistic about the company ' s future
股东对公司的前景很乐观 |
| 9. | Shareholders are optimistic about future of company
股东们对公司的末来非常乐观。 |
| 10. | Be optimistic ! never cross a bridge till you come to it
乐观些！不必为将来太烦恼。 |
