The best performance improvement is the transition from the nonworking state to the working state.
真相很少是纯粹的，也从不简单。
怀疑只能由行动来回答。
【释义】：早晨能发现昨夜的错误，今日能悔改昨日的过失。
Sustainability isn't a buzzword; it's the only way forward for mining.
The best way to predict the future is to create it.
我不害怕做我自己。