矿工的安全永远不应该用成本效益分析来衡量。
A miner's safety should never be measured in cost-benefit analyses.
The only person you should try to be better than is the person you were yesterday.
If you're not making mistakes, you're not trying hard enough.
A true friend is the one who holds your hand and touches your heart.
故事的力量在于它能够改变我们。
