采石业必须与技术一起发展，否则就有落后的风险。

Don't wait until everything is just right. It will never be perfect. There will always be challenges, obstacles and less than perfect conditions. So what. Get started now. With each step you take, you will grow stronger and stronger, more and more skilled, more and more self-confident and more and more successful.

直到此刻，我从未真正了解过自己。

A story is a way of preserving memory.

贸易能够使各国都受益，即便是相对劣势的国家。