系统的稳定性取决于开环传递函数在复平面上的行为。
The most powerful tool a designer has is the ability to say 'no.'
一本书对孩子来说应该像一个朋友——令人安心、兴奋且充满惊喜。
You don’t have to be perfect, just be real.
The despotism of custom is everywhere the standing hindrance to human advancement.