| 31. | The tree owes its existence to soil. |
| 树木赖泥土以生存。
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| 32. | The building has had a checkered existence . |
| 这座建筑物历尽沧桑。
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| 33. | Drivers of racing cars lead a dangerous existence . |
| 赛车驾驶员过着一种危险的生活。
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| 34. | The cheerfulness of the children added relish to his existence . |
| 孩子们的欢乐给他的生活增添了兴味。
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| 35. | John provides me with all the necessities of existence . |
| 约翰给我提供一切生活必需品。
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| 36. | Space is a necessity to the existence of matter. |
| 空间是物质存在的必要条件。
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| 37. | The company has passed out of existence . |
| 该公司已不存在了。
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| 38. | The pairs of opposites condition one another for their existence . |
| 对立面的双方互为存在的条件。
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| 39. | He was driven out of existence . |
| 他被逼得无法活下去。
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| 40. | When he denied the train's existence , I borrowed his copy of the timetable. |
| 他说根本没有这趟车。于是我借他本人的列车时刻表，
|