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数学中的合作是必不可少的;没有人能独自解决所有问题。
We don't inherit the land from our ancestors; we borrow it from our children.
To understand is to forgive, even when understanding is hardest to come by.
面对现实吧!美味的奶油巧克力蛋糕对很多人都很有效,我也不例外。
Biography is the art of making the dead live again.