〔R142〕 

          It is played with two things having telling names.

         One thing tells you it makes battle-like games.

         The other thing tells you it comes back and forth,

         Though not from town to town, nor from south to north.

         Anyway, the game may need something from a cock,

         And it may also need a cork, not to block

         Wine from running out of a bottleneck,

         But to bat the thing a hen will not peck.

〔译注〕 它用两样「名字会告诉人的」东西来玩，

                  其中一样告诉你它造成战斗般的游戏，

                  另一样告诉你它来来往往，

                  虽然不是从城市到城市，或从南到北。

                  总之，那游戏或许需要来自公鸡的东西，

                  而它也或许需要软木塞，不是要阻挡

                  酒，免于流出瓶颈，

             而是要打那个母鸡都不啄食的东西。

〔提问〕 If the game is a good kind of exercise, though it bears the word “bad” in its name, what is it?

〔谜底〕 b________