化学的乐趣在于看到不可见的东西变得可见。
The joy of chemistry is in seeing the invisible become visible.
Poverty is not the issue, but greed is.
Technology is a tool that can empower people, but it must be designed with inclusivity in mind.
违反自然法的人宣称自己遵循的是理性和公平之外的规则。
质量绝非偶然，它总是智慧努力的结果。
释义：只有连根拔除杂草，才能确保它不会再发芽生长。如果砍草时不除去根部，到了春天杂草还会再度生长。