瑞士就是西方国土的“桃花源”啊。

"In the chaos of the world, art is the only order we can create."

这类波可以像光波一样被反射、折射和偏振。

Innovation in coal mining isn't just about extraction—it's about doing it smarter, safer, and with less environmental impact.

可持续性不是一种选择——它是我们对后代的责任。