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The past is the past, and that’s where it belongs.
恐惧只是一道阴影。事实上,你比自己想象的要强大得多。
银行的存在是因为它们有助于缓解信息不对称造成的问题。
The attosecond timescale is to electron motion what the high-speed camera was to studying animal locomotion.
唯一好的教学是那种走在发展前面并引导发展的教学。