电子系统中的拓扑保护概念是一个深刻的见解，它连接了抽象数学和实用物理学。
The concept of topological protection in electronic systems is a profound insight that bridges abstract mathematics and practical physics.
从来没有人有过这样的朋友，如此深情，如此忠诚，如此娴熟。
The key is to set realistic customer expectations, and then not to just meet them, but to exceed them—preferably in unexpected and helpful ways.
I write plays because I have a strong moralistic streak.