51. | The revolution of the earth causes day and night. |
| 地球旋转产生昼夜。
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52. | The earth revolves ( a ) round the sun. |
| 地球绕着太阳公转。
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53. | recognize the rotundity of the earth . |
| 承认地球是圆的。
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54. | The earth rotates around the sun. |
| 地球绕着太阳转。
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55. | The earth rotators from west to east. |
| 地球从西向东旋转。
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56. | the yearly [daily ]round of the earth . |
| 地球的公[自转]。
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57. | The hot sun drew up the moisture from the earth . |
| 炎热的太阳把地上的水分吸干了。
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58. | The mountain was the product of the earth in volcanic labor. |
| 这座山是地球上火山活动的结果。
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59. | He picked up a lump of earth . |
| 他捡起一块泥土。
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60. | The rod diverts lightning into earth or sea. |
| 避雷针把雷电转移到地下或海里。
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