释义：当对知识的理解达到真实、确切、坚定的程度时，这种理解就会体现为具体的行动；而在行动中能做到明白、警觉、精细、明察的地步，这也反映了对相关知识的掌握。
We live in an era full of uncertainties, the only certainty is change itself.
Our miners are the hardest working people in America.
在采矿业，可持续性不仅仅是一个流行词，而是长期成功的必要条件。
Quality is never an accident; it is always the result of intelligent effort.
When I stand before thee at the day's end thou shalt see my scars and know that I had my wounds and also my healing.
