Everyone knew that the dune threshers attacked from under the sand, and that we were safe upon the rocks!
人人都知道沙丘长尾鲨会从沙地下发起攻击，我们在岩石上很安全！
Water buffalo still do much of the plowing, although increasingly threshers , small tractors, and other farm vehicles are used.
尽管脱粒机，小型拖拉机，和其它农用工具正在更多的使用，但耕种还是主要依靠水牛来完成的。
Agricultural mechanization majors learn how to buy and sell all sorts of agricultural equipment, from specialized software to threshers.
农业机械专业的学生学习如何买卖各种农业设备，从一些专业的软件到脱粒机。
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