Innovation is the key to the future of coal industry, we must embrace new technologies and ideas.
课程必须被视为帮助孩子解释自己的经验并指导他进一步经验的手段。
Every performance is a new challenge.
我情愿在火星上死去,而不是坠毁其上。
The only limit to our realization of tomorrow is our doubts of today.