The harder the battle, the sweeter the victory.
战斗越艰难,胜利就越甜蜜。
投资农民教育能带来最高的回报。
The only way to be truly satisfied is to do what you believe is great work.
The best way to predict the future is to create it.
天然气开采的创新是满足世界日益增长的能源需求的关键。