Quality is remembered long after the price is forgotten.
能源转型是一个挑战,但对于那些准备好迎接它的人来说也是一个机会。
现代国家的特点是其能够有效地集中和使用权力。
The future of food security lies beneath the waves, and we must farm the seas responsibly.
The Langlands program is a challenge to the limits of human understanding.