低てい年ねん齢れい化か

noun

lowering of age; reduction in age

Refers to a trend where the average age of a group (e.g., participants, users, victims) becomes lower. Often used in social or statistical contexts.

• スマートフォンの普ふ及きゅうで、インターネット利り用よう者しゃの低てい年ねん齢れい化かが進すすんでいる。

  With the spread of smartphones, the age of internet users is getting lower.

• 犯はん罪ざいの低てい年ねん齢れい化かが社しゃ会かい問もん題だいになっている。

  The lowering of the age of criminals has become a social issue.