老化

HSK 7-9

lǎohuà

age; deteriorate

Explanation

(of knowledge) to become outdated

Examples

书籍会随着时间的推移而老化。

shū jí huì suí zhuǎn shí de tuī yǐ ér érlǎohuà.

Books age with time.

人口老龄化是一个全球性问题。

rékǒu lǎohuàzhězhì shì yīgè quánqiú xìng wèntí.

Aging population is a global issue.