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。
I think the best relationships are the ones where you can be completely yourself.
If you're not improving, you're falling behind—especially in an industry as dynamic as animal husbandry.
质量永远不应该妥协；它定义了我们的声誉。