The coal industry must evolve to meet modern environmental standards, or it will become obsolete.
所谓道德抑或不道德的书是不存在的。书就只有分写得好、写得差,仅此而已。
大胆梦想,努力工作,永远不要放弃你所相信的。
Sometimes we get sad about things and we don’t like to tell other people that we are sad about them.
有时我们会为某些事情感到悲伤,而我们不愿意告诉别人我们为此感到悲伤。