Development economics is ultimately about improving people's lives.
发展经济学最终是为了改善人们的生活。
The paper industry has a responsibility to lead the way in environmental stewardship.
Efficiency and technology are the keys to surviving in a volatile oil market.
在科学中听到的最令人兴奋的短语，预示着新发现的，不是“我找到了！”而是“这很有趣...”
在计算学习理论中，挑战不仅仅是学习，而是理解学习是如何可能的。
每一本书都是一扇通向另一个世界的门，每一个读者都是穿越它的旅行者。
Innovation in forestry begins with respecting traditional wisdom.
词语就像钥匙，选对了就能打开任何一扇门。