"You can't stop the future, you can't rewind the past, the only way to learn the secret is to press play."
你希望成为池塘里的鹅卵石,激起改变的涟漪。
Randomized evaluations can help us understand what works and what doesn't in development.
适应性是在不断变化的行业中生存的关键。
OPEC no longer holds all the cards in global oil markets.