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数学不是一项观赏性运动。
过去不是异国,而是我们祖先的家园。
I was so much older then, I'm younger than that now.
他意识到,生活就像一首歌。开始时是神秘,结束时是确认,但中间是所有情感所在,使整个事情变得值得。
The opposite of a correct statement is a false statement. But the opposite of a profound truth may well be another profound truth.