活到老干到老的“干”是什么意思?
所有跟帖:
• 干物理上就是上下运动的意思,哈哈哈 -USATiger- ♂ (0 bytes) () 06/30/2021 postreply 16:06:00
• 翻译成英文是不是:up and down, back and forth, in and out? -东施爱美- ♀ (0 bytes) () 06/30/2021 postreply 17:09:25
• 干物理上就是上下运动的意思,哈哈哈 -USATiger- ♂ (0 bytes) () 06/30/2021 postreply 16:06:00
• 翻译成英文是不是:up and down, back and forth, in and out? -东施爱美- ♀ (0 bytes) () 06/30/2021 postreply 17:09:25