1.the chessman that can move any number of unoccupied squares in a direction parallel to the sides of the chessboard.
能在与棋盘平行的方向的空位上移动任何步数的棋子。
2.to advance a chessman
(棋子)往前走一步
3.the least powerful chessman; moves only forward and captures only to the side; can be promoted if it reaches the 8th rank.
最次要的棋子；只能向前移动只能吃侧方的棋子；如果达到第八级可以被提升。
