这家工厂位于城市的边缘地带，靠近高速公路。

The factory is located in a ___peripheral zone of the city, close to the highway.

这个问题只是会议中一个次要的议题。

This issue was only a ___peripheral topic in the meeting.

我需要一个新的打印机作为电脑的外部设备。

I need a new printer as a ___peripheral for my computer.