zhè / tái / jī / qì / de / chǐ / lún / xiāng / fā / chū / yì / cháng / de / shēng / yīn / xū / yào / mǎ / shàng / jiǎn / xiū

这台机器的齿轮箱发出异常的声音，需要马上检修。

The gearbox of this machine is making an unusual noise and needs to be serviced immediately.