| 1. | He was unable to recognize his assailant in the dark. |
| 他在黑暗中认不出殴打他的人。
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| 2. | The tenor soloist is unable to appear tonight because of illness. |
| 男高音独唱者因病今晚不能演出。
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| 3. | He is still unable to express himself in English. |
| 他仍然不能用英语表达自己的意思。
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| 4. | Much to my regret, I am unable to accept your invitation. |
| 很抱歉,我不能接受你的邀请。
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| 5. | I'm unable to throw off this feeling of inertia. |
| 我无法摆脱这种懒散的感觉。
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| 6. | Owing to their intransigent attitude we were unable to reach an agreement. |
| 由于他们态度僵硬,我们无法达成协议。
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| 7. | She was unable to keep back her tears. |
| 她无法忍住泪水。
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| 8. | Unable to afford a new car, we had to run the old one into the ground. |
| 我们因为买不起新汽车,只得把那辆旧的用坏为止。
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| 9. | She was unable to get to grips with her assailant. |
| 她无力与袭击她的人扭打。
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| 10. | The street was so crowded that cars were unable to pass. |
| 街道十分拥挤,汽车无法通行。
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