When answering this question, you can compare the reasons why younger and older people might smile more. For example, you could say that children and young people tend to smile more because they are carefree, easily amused, and less burdened by responsibilities. On the other hand, older people might smile less due to stress, life challenges, or health issues, but some older people may smile more because they have learned to appreciate life and find joy in small things. You can also mention that smiling habits can vary depending on personality and cultural background.

在回答這個問題時，你可以比較年輕人和年長者為什麼會笑得更多的原因。例如，你可以說孩子和年輕人傾向於更多地微笑，因為他們無憂無慮、容易被逗樂，且較少有責任負擔。另一方面，年長者可能因為壓力、生活挑戰或健康問題而較少微笑，但有些年長者可能微笑更多，因為他們學會了欣賞生活並從小事中找到快樂。你也可以提到，微笑的習慣可能因個性和文化背景而異。