人在学习上，如果不每天进步就会每天退步。
解释：辅与车互相依存，嘴唇没有了，牙齿就要受寒。
创新是银行业未来的关键。我们必须拥抱科技以保持竞争力。
Economics is the study of how societies use scarce resources to produce valuable goods and services and distribute them among different individuals. If we think about the definitions, we find two key ideas that run through all of economics:
