每个故事至少有两面。
引力比其他力弱得多这一事实可能是物理学中最深刻的谜团。
水利工程的成功取决于人与自然的和谐。
Innovation in natural gas extraction is key to meeting the world's growing energy demands while reducing environmental impact.
The only philosophy which can be responsibly practiced in face of despair is the attempt to contemplate all things as they would present themselves from the standpoint of redemption.