释义 |
exchange line短语¹⁴⁴⁹⁷²⁺² 基本例句 用户线 New charges proposed by the regional Bell holding companies to supplement subscriber line charges.地区贝尔控股公司提议增加新的收费以补充用户线收费。 A private telephone exchange that automatically connects internal “branch” lines to the external circuits of a telephone system.一种自动地将内部用户线连接到电话系统外线的专用电话交换机。 |