单干户用机械成本太高，必须先合作化以后，才能将成本降下来，这么简单的道理不对吗？

来源: f2022f 于 2025-08-19 16:41:45 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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