キャタピラ

noun

caterpillar track; continuous track

Refers to the metal or rubber belt system used on tanks, bulldozers, and other heavy vehicles for traction.

• ブルドーザーはキャタピラーでぬかるみを進すすんだ。

  The bulldozer moved through the mud on its caterpillar tracks.

• 戦せん車しゃのキャタピラーが壊こわれて動うごけなくなった。

  The tank's caterpillar track broke and it became immobilized.