Technology in forestry should serve sustainability, not just efficiency.
林业技术应该服务于可持续性，而不仅仅是效率。
The old-fashioned dictator does not exist under scientific management.
忧患使人生存发展，安逸享乐使人萎靡死亡。
The coal industry has been the backbone of America's energy independence for generations.
教学的艺术不在于传授本领，而在于激励、唤醒和鼓舞。