主机板

例句：

1. 1. The computer needs a new motherboard to fix the problem.
   这台电脑需要更换主板来解决问题。
2. 2. The engineers are working on the mainboard of the new car.
   工程师们正在修理新车的主板。
3. 3. The company is considering buying a new mainboard for its servers.
   公司正在考虑为其服务器购买新的主板。