Gōng / chǎng / tí / qián / zhǔn / bèi / le / zú / gòu / de / bèi / pǐn / yǐ / miǎn / jī / qì / chū / xiàn / gù / zhàng / shí / lái / bu / jí / gēng / huàn

工厂提前准备了足够的备品，以免机器出现故障时来不及更换。

The factory prepared enough spare parts in advance so they could be replaced quickly if the machines broke down.