I have been a selfish being all my life, in practice, though not in principle.
电流体并非由仪器创造，而是由仪器收集。
The future of food depends on our ability to balance productivity with responsibility.
每部电影都是一次新的挑战。
良心是上帝在人间的存在。
Every man is his own greatest enemy， and as it were his own murderer.
The key to success in mining is sustainability—balancing economic growth with environmental responsibility.