实现明天理想的唯一障碍是今天的疑虑。
跨行业合作是解决全球粮食安全挑战的关键。
The most important political challenge of our time is to create strong, effective, and accountable states.
I don’t let failure get to my heart, I let it get to my head.
神经系统的复杂性既是挑战,也是灵感。
A person may cause evil to others not only by his actions but by his inaction, and in either case, he is justly accountable to them for the injury.