Waves of this kind can be reflected, refracted, and polarized just like light waves.
这类波可以像光波一样被反射、折射和偏振。
I'm not a perfectionist, but I like to feel that things are done well.
行业与社区的合作是保护森林的关键。
The only way that I know how to express myself is through music.
人类的进步史也就是人类的堕落史;而私有制的确立,是造成人类不平等及其后果的关键。