老化

lǎo huà

to age

Example Sentences

随着使用年限的增加,老旧小区的自来水铸铁管道出现了严重的老化生锈。

suí zhe shǐ yòng nián xiàn de zēng jiā, lǎo jiù xiǎo qū de zì lái shuǐ zhù tiě guǎn dào chū xiàn le yán zhòng de lǎo huà shēng xiù.

With the increase of service life, the cast iron pipes of tap water in old residential areas have become seriously aged and rusted.

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