alphanumeric pager

例句：

1. 1. This alphanumeric pager is very useful for emergency situations.
   这个数字键盘电话机在紧急情况下非常有用。
2. 2.The alphanumeric pager was a popularchoice among the employees.
   数字键盘电话机是员工们非常受欢迎的选择。
3. 3. The alphanumericpager helped me to stay in touchwith my colleagues during the long flight.
   数字键盘电话机在我长途飞行期间帮助我与同事们保持联系。