to back up...
to back up...是什么意思、to back up...怎么读
支持..., 撑(某人)的腰, 阻碍..., 使...倒退, 阻塞..., 使...积滞
to back up...汉语翻译
支持..., 撑(某人)的腰, 阻碍..., 使...倒退, 阻塞..., 使...积滞