背包徒步幾個小時，肩膀不應該疼，否則太辛苦了。腹部那根背包帶就是減輕肩上重量的。肩膀那裏應該是鬆的。

來源: AprilMei 於 2023-09-10 10:44:10 [博客] [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.