推动煤炭工业高质量发展,必须依靠科技创新和智能化升级。
命题是断言某事是或不是事实的陈述。
I am among those who think that science has great beauty.
如果战略达到了目标,它就是有用的;如果战略实现了目标,它就是成功的。
The individual investor should act consistently as an investor and not as a speculator.