１０じゅう年ねん代だい

noun

the '10s; the tens

Refers to the decade whose years end in 10–19, e.g. the 2010s. Often used with a century prefix like 20.

• ２０１０年ねん代だいはスマートフォンが急きゅう速そくに普ふ及きゅうした。

  Smartphones spread rapidly in the 2010s.