| 1. | He has flung down a challenge to his political rivals .
他已向其政敌提出挑战。 |
| 2. | He courageously and decisively confronted their challenge to his authority .
他勇敢而毅然决然地处置了他们对他的权威的挑战。 |
| 3. | He had not expected such a challenge to disclose the secret in his heart .
他没有料到会给自己来这样一个挑战，要他摊出心里的秘密。 |
| 4. | Inevitably this produced a challenge to our previous predominance in our alliance .
这不可避免地形成了对我们从前在联盟中的支配地位的挑战。 |
| 5. | Wilson acted with customary boldness in this great challenge to his leadership .
威尔逊在这次对他领导的重大挑战中，以其惯有的大胆采取行动。 |
| 6. | The manager is challenged to find systematic ways to share his privileged information .
管理者被要求寻找系统的方法，以便与他人分享其特殊的信息。 |
| 7. | To overcome these obstacles has always been and continues to be a major challenge to aviation .
怎样克服这些障碍，过去经常是，而且现在仍然是航空界的重要难题。 |
| 8. | There was little challenge to the notion that the commercialization of nuclear power deserved a high priority .
很少有人对“核电商业化理应列为重点”的看法提出异议。 |
| 9. | This challenge to executives in any field is compounded in washington by the close relationship between government and the media .
在华盛顿，由于政府和新闻界之间关系密切，对任何方面的领导人的这一挑战变得更加复杂。 |
| 10. | Exploring the outer space is a challenge to mankind
探索太空对人类是一个挑战。 |
