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| 51. | Looking back it is easy to see the tensions which lay just below the surface in those peaceful years |
| 回顾我成长的那些岁月，不难看出就在和平的表象下存在着紧张气氛。 |
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| 52. | By their constant motion below the surface the worms till the earth, as rakes, spades, or ploughs till |
| 蚯蚓在泥土里不停地钻来钻去，就如同人们在地面上用耙子、或犁来掘松泥土一样。 |
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| 53. | A hollow, usually inverted vessel, such as one used for diving deep below the surface of a body of water |
| 钟形船一种中空的、通常倒置的船，如用于潜入水面下深处的船 |
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| 54. | often rise up to 100 meters above the waterline —— keep in mind that 90 percent of an iceberg is hidden below |
| 极地附近活动的人最担心遇到冰崩了，冰山移动速度虽慢，但随时会有冰崩现象发生。 |
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| 55. | A recent study suggests, however, that permafrost ices below the surface of Mars may have altered the |
| 但是，近来的研究表明，火星土层表面下的永久冻结冰可能改变了这种冲击效应。 |
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| 56. | Tons of sublevel ore, two miles below the Martian surface. |
| 在火星岩层下发现的巨量矿石。。。 |
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| 57. | the remnants of an ancient crater, dubbed the impact basin and hundreds of kilometers, wide, exist below |
| 很少有科学家会怀疑，位于墨西哥海峡水下那个数百千米宽的陨石坑就是那次撞击的遗迹。 |
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| 58. | A hole with the top part enlarged so that the head of a screw or bolt will lie flush with or below the |
| 埋头孔顶部扩大的孔，为使钻或螺栓的头与地面相平或在地面以下 |
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| 59. | Apply to the temperature below the surface of the steel, and parts of heat, the anti-corrosion protection |
| 可室温干燥，耐高温，具有良好的耐热性及机械物理性能。适用于温度以下工作的钢铁表面，及零件的耐热、腐保护涂层。 |
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| 60. | By their constant motion below the surface the worms till the earth, as rakes, spades, or ploughs till |
| 这些孔道也有助于空气轻易地透进泥土里面。蚯蚓在泥土里不停地钻来钻去，就如同人们在地面上用耙子、铲或犁来掘松泥土一样。 |
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