1·He is a cavalryman.
他是一个骑兵。
—— 《新英汉大辞典》
2·Now the boy would like to be a cavalryman, thus the captain should take him in or hang him.
现在这个男孩想成为一个骑兵，所以队长应该收留他或是带着他。
3·When cavalry and infantry engage in battle, one cavalryman is equivalent to how many infantrymen?
用骑兵与步兵战斗，一名骑兵相当于几名步兵？
4·Thus when chariots and cavalry are not engaged in battle with the enemy, one cavalryman is not able to equal one foot soldier.
因此车骑使用不恰当，在战斗中一名骑兵还不能抵挡一名步兵。