天然气开采的创新是满足世界日益增长的能源需求同时减少环境影响的关键。
世界是一个没有结局的故事。
"A writer's duty is to tell the truth, even when it is uncomfortable."
一个试图教学而不激发学生学习欲望的教师,就像在冷铁上敲打。
The system produces needs faster than it can satisfy them.