这类波可以像光波一样被反射、折射和偏振。
Quality is remembered long after price is forgotten.
文学是文字的艺术，而文字是思想的工具。
The duties of all public officers are, or at least admit of being made, so plain and simple that men of intelligence may readily qualify themselves for their performance.
I believe in the magic of Christmas.
The artist must be free, even from himself.