你最不满意的客户是你最好的学习来源。
Your most unhappy customers are your greatest source of learning.
In international trade, a country should specialize in the production of goods for which it has a comparative advantage, and trade with other nations to maximize overall economic welfare.
Science is an adventure into the unknown, every discovery is a reverence for nature.
"The more honest you are, the more people connect with your music."