英译汉:Call control, setup, tear-down and maintenance

英译汉:Call control, setup, tear-down and maintenance 英语翻译Item setup and maintenance of the following attributes: currently down for maintenance tear me down Tear Me Down 歌词 maintenance repair and overhaul growth and maintenance是什么意思 assembly and maintenance tear sb down什么意思 Envy of others' success and trying to tear others down helps Performance and Maintenance什么意思 wear-and tear