| 51. | When the instrument is situated at more than 700 miles from the earthquake centre, the graphic record shows three waves arriving one after at short intervals. |
| 如果把这种仪器安装在距震源700多英里远的地方，曲线记录就能显示出前后相同的这3种地震波。
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| 52. | An earthquake may destroy a town, much less a small village. |
| 地震可以毁灭整座城市，更不用说一个小村庄了。
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| 53. | The tidal waves were caused by a great earthquake on the ocean bottom near Alaska. |
| 海啸是由靠近阿拉斯加的洋底发生剧烈地震而引起的。
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| 54. | If an earthquake comes, this roof will fall. |
| 要是发生地震，这屋顶就会倒塌。
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| 55. | The earthquake died away with a low rumbling sound. |
| 地震随着一阵低沉的隆隆声过去了。
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| 56. | A severe earthquake struck the area. |
| 一次强烈的地震袭击了该地区。
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| 57. | The earthquake last night was long. |
| 昨夜的地震持续时间很长。
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| 58. | There was a slight [light] earthquake , the vibration lasting a few seconds. |
| 有过一次轻微的地震，持续仅几秒钟时间。
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| 59. | The village was destroyed by [in] an earthquake . |
| 村庄在一次地震中遭到毁灭。
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| 60. | The region soon recovered from the effects of the earthquake . |
| 该地区受地震影响后不久就恢复正常。
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