垒员
2.Bases loaded: Bases are said to be loaded when there is a base runner on each base.
4.An act of sliding by a base runner during which the runner veers sideways to avoid being tagged.
5.Peter, the pitcher, saw that the base runner was not on base, so he surprised him by throwing the ball to the first baseman, who ran him down before he reached second base.
6.To put out(a base runner) by throwing the ball to the player guarding the base to which the base runner is moving.
8.To allow(a run) to be scored by walking a batter when the bases are loaded.

