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Courage is the most important of all the virtues, because without courage you can't practice any other virtue consistently.
The key to solving global hunger is not just increasing yield, but improving nutritional quality.
If you do something once, people will call it an accident. If you do it twice, they call it a coincidence. But do it a third time and you've just proven a natural law.
采石业必须与技术一起发展,否则就有落后的风险。