轧棉机的发明是需求和观察的结果。
The invention of the cotton gin was the result of necessity and observation.
"Literature is the mirror of society, reflecting its beauty and its flaws."
我不是和平，我是战争。
Efficiency is doing things right; effectiveness is doing the right things.
我不会让消极情绪击垮我。
The human being is born with a few reflexes and the emotional reactions of love and rage.
