11. | Scientists are investigating to find out the cause of the crash/are investigating how the crash occurred. |
| 科学家们正在调查失事的原因[事故是如何发生的]。
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12. | It was very perspicacious of you to find the cause of the trouble so quickly. |
| 你真是明察秋毫,问题的原因这么快就找出来了。
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13. | You'll have to mend that leak or it will cause problems later. |
| 你得修补那个裂缝,不然以后会出问题。
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14. | Thumb-sucking can cause protrusion of the teeth. |
| 经常吮吸拇指能使牙齿向外突出。
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15. | There is no cause for concern. |
| 不必发愁。
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16. | You have no cause for complaint/no cause to complain. |
| 你没有理由抱怨。
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17. | She is never absent from work without good cause . |
| 她决不无故缺勤。
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18. | He fought for the republican cause in the civil war. |
| 他在内战中为共和事业而战。
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19. | Her life was devoted to the cause of justice. |
| 她为正义事业而献身。
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20. | Smoking can cause lung cancer. |
| 吸烟可致肺癌。
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