51. | We worked south through the forest . |
| 我们费力地穿过森林向南前进。
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52. | A large part of Russia is made up of thick forest (s). |
| 俄罗期很大一部分地区是由茂密的森林构成的。
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53. | He got lost in the forest . |
| 他在森林里迷了路。
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54. | We walked throught the forest . |
| 我们步行穿过森林。
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55. | About 26,000 square miles of the country are under forest . |
| 这个国家约有26000平方英里的面积为森林所覆盖。
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56. | He fled into a forest . |
| 他逃进森林。
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57. | The detachment marched amidst the forest with the guide going in front. |
| 小分队在森林中行进,由向导在前面领路。
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58. | Walking through the forest one day, we found a strange little hut that no one had ever seen before. |
| 有一天我们步行穿过森林时,发现了一所以前谁也同见过的奇特的小屋。
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59. | At last firemen have put out a big forest fire in California. |
| 消防队员们终于扑灭了加利福尼亚的一场森林大火。
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60. | Forest fires are often caused by broken glass or by cigarette ends which people carelessly throw away. |
| 森林火灾时常由破碎的玻璃或人们随手扔掉的香烟头引起。
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