| 51. | a pool of doctors available for emergency work |
| 为应付紧急情况而待命的一些医生
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| 52. | swim two lengths of the pool |
| 在游泳池中游一个来回
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| 53. | a spring board at a swimming pool |
| 游泳池的跳板
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| 54. | a beautiful estate with a country house and a swimming pool |
| 一座建有别墅和游泳池的美丽庄园
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| 55. | pool experience |
| 汇集（多方的）经验（以共享）
|
| 56. | plunge into the river [a swimming pool ] |
| 跳入河中[游泳池]
|
| 57. | a smooth lawn centred by a pool |
| 中间有一个池塘的平坦草地
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| 58. | struggle through the muddy pool onto the shore |
| 奋力涉过泥泞的水塘爬上岩
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| 59. | On the rich land with a beautiful pool , growing were bamboo, mulberry and the like. |
| 复行数十步，豁然开朗。
|