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21 hours ago · Phonograph record. A phonograph record (also known as a gramophone record, especially in British English ), a vinyl record (for later varieties only), or simply a record or vinyl is an analog sound storage medium in the form of a flat disc with an inscribed, modulated spiral groove. The groove usually starts near the outside edge and ends near ...
21 hours ago · 在 Python 中，你可以使用 datetime 模块来处理日期和时间。如果你有一个日期字符串，并想将其转换为指定格式的日期，可以先使用 datetime.strptime 方法将字符串解析（parse）为 datetime 对象，然后使用 datetime.strftime 方法将这个 datetime 对象格式化为你需要的字符串格式。
