过去总是紧张的，未来是完美的。

The alternation of motion is ever proportional to the motive force impressed; and is made in the direction of the right line in which that force is impressed.

提高就是要改变,而要达到完美就要不断改变。

Life is about creating yourself.

采矿技术创新不是为了取代人，而是为了让他们的工作更安全、更高效。