| 1. | Mr. smith challenged chairman's ruling . 史密斯先生不服从主席的裁决。 |
| 2. | The scaling problem is the most challenging . 结垢是最复杂的问题。 |
| 3. | They offer little challenge or autonomy . 它们没有什么战斗性或主动权。 |
| 4. | The challenge for mr. kemper was manifold . 肯珀先生面临的问题是复杂的。 |
| 5. | What did he do in reply to your challenge ? 你提出与他较量,他作何反应? |
| 6. | We were thus facing a crass challenge . 我们就面临着粗暴的挑衅。 |
| 7. | Angry critics challenged the finding . 忿怒的评论者对研究结果提出了异议。 |
| 8. | The challenge of invasion had definitely weakened . 入侵的威胁已显然减轻。 |
| 9. | I felt as if she challenged him to run away . 我觉得她好象要逼着他溜跑似的。 |
| 10. | New times define new challenges . 新的时代具有新的战斗任务。 |