一个主电话机可以连着几个分机，接听或拨打可以用主机，也可以用任何一个分机cordless phone system

• 目前市场上大约有100多种“子母机”电话。

  Currently, there are around 100 or more types of cordless phone system on the market.

• 从汉显BP机到子母机，史素格的联络工具也在几年里不断地更新换代。

  From a Chinese language pager to a cordless phone system, Shi Suge has constantly renewed and upgraded her communications devices over the years.