pony engine

短语

词形变化

pony engines 复数 pony engines

释义与例句

n.
  1. 1.

    A small locomotive used for shunting wagons, etc.

  2. 2.

    A small gasoline engine serving as an auxiliary to a diesel engine (mainly in older designs from the 1930s to 1950s), providing heat to warm it up and, when engaged with a clutch, providing cranking to start it up.

    加拿大 美国 过时