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er an hour even over the shortest distances and the swiftest movement it can make is a sweep of its hooked arm.

樹獺即不講究衛生，以至於它粗糙的毛發上生出綠苔，成群的寄生蛾生長在它的皮毛深處，變成毛毛蟲，並以它的髒毛為食。她的肌肉不能讓他哪怕在很短的距離以內以每小時一公裏的速度移動。它能做的最敏捷的動作就是揮一揮它彎曲的胳膊。

86. Artificial flowers are used for scientific as well as for decorative purposes. They are made from a variety of materials, such as way and glass, so skillfully that they can scarcely be distinguished from natural flowers.

人造花卉即可用於科學目的，也可用於裝飾目的，它們可以用各種各樣的材料製成，臂如蠟和玻璃；其製作如此精巧，幾乎可以以假亂真。

87. Three years of research at an abandoned coal mine in Argonne, Illinois, have resulted in findings that scientists believe can help reclaim thousands of mine disposal sites that scar the coal-rich regions of the United States.

在伊利諾州Angonne市的一個廢棄煤礦的三年研究取得了成果，科學家們相信這些成果可以幫助改造把美國產煤區弄得傷痕累累的數千個舊煤場。

88. When the persuading and the planning for the western railroads had finally been pleted, the really challenging task remained: the dangerous, sweaty, backbreaking, brawling business of actually building the lines.

當有關西部鐵路的說服和規劃工作終於完成後，真正艱難的任務還沒有開始；即危險，吃力，需要傷筋動骨和吵吵嚷嚷的建造這些鐵路的實際工作。

89. Because of the space crunch, the Art Museum has bee increasingly cautious in considering acquisitions and donations of art, in some cases passing up opportunities to strengthen is collections.

由於空間不足，藝

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