二ふたつ置おき

noun

every third

Used when counting items or intervals, meaning every third one (i.e., skip two, take the third). Often used with time or position.

• このバスは二ふたつ置おきに来きます。

  This bus comes every third stop.

• 二ふたつ置おきの席せきに座すわってください。

  Please sit in every third seat.