n．滚地球：一种在棒球比赛中击球手击出的沿地面滚动的球。
... 单打支柱singlenetpost 落地球groundball 球网白边band ...
... 棒球界外地区（FoulTerritory） 地滚球（GroundBall） 内野手（Infielder） ...
Harrell got 14 groundball outs, and he induced three double plays in the first four innings.
He then started a 6-4-3 double play when next batter, Jose Iglesias, hit a groundball.
He yielded only groundball singles to Ichiro Suzuki and Austin Romine while lowering his major league-best ERA to 1.62.