谷物生产的效率不是选择,而是必需。
Efficiency in grain production isn't an option—it's a necessity.
书籍是连接我们与过去的桥梁。
You may have to fight a battle more than once to win it.
系统辨识是从观测到的输入输出数据中建立动态系统数学模型的科学与艺术。
The only way to deal with the future is to function efficiently in the present.