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Sustainability isn't an option; it's a responsibility we owe to future generations.
生活就是受苦,生存就是在苦难中找到某种意义。
数学中的合作是必不可少的;思想的交流导致了任何单一思维都无法独自实现的突破。
"I think it should be called a lie because a pig is not like a day and people do not have skeletons in their cupboards."