Sustainability in mining isn't an option—it's a necessity for our future.
Trees are the earth's endless effort to speak to the listening heaven.
出自《抱朴子·广訾》。病到很急的时候就会觉得良医是重要的了,世道动乱的时候就会觉得忠贞的臣子是重要的了。
真理的最小原子也代表着某个人艰苦的劳动和痛苦。