真相很少是纯粹的，也从不简单。
"The truth is rarely pure and never simple."
Innovation in leather tanning isn't just about new chemicals; it's about rethinking the entire lifecycle of the material.
The fundamental law of the militia is, that it be created, directed and commanded by the laws, and ever for the support of the laws.
创新不仅仅是技术的问题；它关乎我们思考和运作方式的改变。