peripheral

• 指与外围、边缘或边界有关的；也指次要的、非核心的。

Relating to the outer edge or boundary of something; not of primary importance.

1. Relating to the outer edgeB2formal

   Situated on the edge or periphery of something, not central.

   外围的

   • The peripheral areas of the city are less developed.
   • Peripheral vision helps you detect movement from the side.
   • The company focused on core products, not peripheral ones.

   同义词borderlineedgefringemarginalouteroutlyingsurrounding

   反义词centralcoreinnerinterior

2. Minor or secondaryB2formal

   Of secondary or minor importance; not essential.

   次要的

   • These issues are peripheral to the main problem.
   • He only played a peripheral role in the project.
   • The discussion touched on peripheral topics, not the main agenda.

   同义词incidentalinessentialirrelevantmarginalminornonessentialsecondarysubordinatetangentialunimportant

   反义词centralchiefcriticalessentialfocalkeymainprimaryprincipalvital

3. Computer hardwareB1formaltechnical

   Relating to devices that connect to a computer, such as printers or keyboards.

   外设的

   • Peripheral devices include the mouse, keyboard, and monitor.
   • The printer is a common peripheral for home computers.
   • You need to install drivers for new peripheral hardware.

   同义词add-onauxiliaryexternalsecondary

• 指连接到计算机等设备的辅助装置，如键盘、鼠标或打印机，用于扩展功能；也泛指外围设备或周边设备。

A noun referring to a device that connects to a computer, such as a keyboard, mouse, or printer, to add functionality.

1. Computer hardware deviceB2formal

   An external device connected to a computer that provides input/output functions, such as a keyboard, mouse, or printer.

   外设

   • The monitor and keyboard are essential peripherals for any desktop computer.
   • He bought a new printer as a peripheral for his home office.
   • Wireless peripherals like mice and keyboards are very popular now.

   同义词accessoryadd-on