non stop dial tone后: behind; back; rear拨号音: dial tone; trunk tone不断: ceaseless; unceasing; uninte ...拨号音不断（拨号后）: non-stodial tone摘机后拨号音不断: dial tone continues after off-hook下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:拨号后拨号音不断，即可在微信中查询翻译
