每一个挑战都是伪装的机遇——只要你有心发现。
Every challenge is an opportunity in disguise—if you're willing to see it.
The coal industry has been the backbone of America's energy independence for generations.
The only limits that exist are the ones in your mind.
攻击我很厉害我也回敬得很厉害，攻击我很轻微我也回敬得很轻微。