Sustainable development is not a slogan but a concept that must be practiced. We must keep the land forever vibrant.
You can't let praise or criticism get to you. It's a weakness to get caught up in either one.
大自然似乎有意让电的定律从大空间观察到的现象中推导出来,而不是从实验室狭窄范围内观察到的现象中推导出来。