Noun:

1. (football) the running back who plays the offensive halfback position

2. (American football) the position of a back on a football team

Halffn.阿尔夫halfn.一半；下半场；半学年adj.一半的；不完全的adv.一半地；不完全地half hardy不能在户外过冬的halfvolumen.半容积half roundadj.半圆形(半圆的；半月形的)half order半阶, 半序half-cupn.半杯halflights半强度的光,(图画中)半明亮部分,暗淡的光线half corns谷物碎粒half-litadj.喝醉酒的half-sib半同胞half prism半棱镜

1. The star halfback hauled down the pass for a touchdown.
   那位明星中位接住远传球触地得分。
2. The injured right halfback was compelled to sit out the rest of the play.
   受伤的右中卫只好退出比赛，在剩下的时间里坐在一旁。