lǎo / chèng / de / chèng / chuí / yǐ / jīng / shēng / xiù / le / shǐ / yòng / qián / xū / yào / cā / gān / jìng

老秤的秤锤已经生锈了，使用前需要擦干净。

The steelyard weight on the old scale has rusted and needs to be cleaned before use.