are maximum yield and superior quality, utilizes inFORMation derived from other sciences.
68.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.
69.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.
70.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.
71.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.
72.黃菊花通常令人生厭，它擠走不那麼頑強的植物，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 present.
73.大約從公元前七千年開始，在四千年當中，北半球的溫度比現在高。
74. When Henry Ford first sought financial backing for making cars, the very notion of farmers and clerks owning automobiles was considered ridiculous.
74.當亨利.福特最初製造汽車為尋求資金支持時，農民和一般職員也能擁有汽車的想法被認為是可笑的。
75. Though once quite large, the population of the bald eagle across North America has drastically declined in the past forty years.
75.北美禿頭鷹的數量一度很多，但在近四十年中全北美的禿頭鷹數量急劇下降。