“备件”的拼音为：bèi jiàn...

...

这些机器将来会需要备件和维修保养。In the future the machines will need spare parts and maintenance.我会指给你看放备件的地方.I'll show you where the spares are kept.我一直在到处寻找,想弄到这种备件.I've been trying to raise this spare part everywhere....