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68. The science of horticulture, in which the primary concerns are maximum yield and superior quality, utilizes inFORMation derived from other sciences.

主要目的在於豐富和優質的農藝學利用了其他科學的知識。

69. Snow aids farmers by keeping heart in the lower ground levels, thereby saving the seeds from freezing.

雪對農民是一種幫助，因為它保持地層土壤的溫度，使種子不致凍死。

70. Even though the precise qualities of hero in literary words may vary over time, the basic exemplary function of the hero seems to remain constant.

曆代文學作品中的英雄本色雖各有千秋，但其昭世功力卻是恒古不變的。

71. People in prehistoric times created paints by grinding materials such as plants and clay into power and then adding water.

史前的人們製造顏料是將植物和泥土等原料磨成粉末，然後加水。

72. Often very annoying weeds, goldenrods crowd out less hardy plants and act as hosts to many insect pests.

花通常令人生厭，它擠走不那麽頑強的植物，並找來很多害蟲。

73. Starting around 7000 B.C., and for the next four thousand years, much of the Northern Hemisphere experienced temperatures warmer than at pre

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