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采矿业的未来在于可持续性和技术。
Success is not about luck; it's about hard work and determination.
There is no more intrepid a voyager than the philosopher.
I don't know what's tighter, my jeans or my security.
如果你每天都履行自己的义务,你就不必担心未来。
当你不再担心别人怎么想的那一刻,你就自由了。