NPV当然是要考虑这些的，住家保姆起码3000+食品住宿+税。机器人可以定价每个月2000。很容易算PV.

来源: mjnew 于 2026-02-06 05:51:00 [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.