back and fill

短语

前进时帆忽张忽缩, 出尔反尔

词形变化

backs and fills 三单 backing and filling 现在分词 backed and filled 过去式 backed and filled 过去分词

释义与例句

v.
  1. 1.

    To manage a sailing ship so that the wind strikes them alternately in front and behind, in order to keep the ship in the middle of a river or channel while the current or tide carries the vessel against the wind.

    航海 交通
  2. 2.

    To zigzag, or make a pivot turn by alternately putting the engine in reverse and forward, while turning the wheel or tiller.

    航海 交通
  3. 3.

    To take opposite positions alternately; to flip-flop

    比喻