| 51. | The opposition movement has died a natural death. |
| 抵抗运动自然而然地消亡了。
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| 52. | I'm out of my depth when it comes to natural sciences. |
| 一涉及自然科学，我就茫然无知了。
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| 53. | a beautiful natural setting for a play. |
| 适于演出戏剧的美丽的天然背景。
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| 54. | The region has suffered an unprecedented series of natural disasters. |
| 这一地区遭受了一系列前所未遇的自然灾害。
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| 55. | The artist has sketched in a few trees to show what the new building will look like in its natural surroundings. |
| 画家粗略地添加了几棵树，以显示新建筑物在其自然环境中会是什么样子。
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| 56. | It's natural to slack off towards the end of a hard day's work. |
| 辛苦工作了一天，快结束时有所松驰是很自然的。
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| 57. | She finds it difficult to get over the very natural sorrow at leaving home. |
| 她感到很难克服那种离家时油然产生的悲愁情绪。
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| 58. | You don't see animals in their natural surroundings at a zoo. |
| 在动物园看不到天然环境中生活的动物。
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| 59. | He had a natural sympathy for the downtrodden. |
| 他天生同情被压迫者。
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| 60. | It's only too natural he will be thwarted in his ambitions. |
| 他的图谋将被挫败是很自然的事。
|