1) How long has that telephone been ringing ?
电话响多久了?
2) How long has that telephone bell been ringing?
电话铃响多久了?
4) The private line rang.
内线电话响了。
5) How long have you had it?
起了多久了?
6) How long did it last?
持续了多久?
补充资料:持续
延续;继续:持续很长时间|还将持续|产量持续增长。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条