中國有些城市也有這種機製，年輕時時候做多長時間誌願者，可以將時間攢起來。獻血也可以。

來源: nydct 於 2023-02-19 05:25:14 [舊帖] [給我悄悄話] 本文已被閱讀：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.