Safety isn't just a policy, it's a culture that must be lived every day in our mines.
成功不在于你赚了多少钱,而在于你对人们生活带来的改变。
每一个超限的一致多重性,即每一个超限集合,必须有一个确定的阿列夫作为其基数。
The past is never dead. It's not even past.