1.
First Base Umpire- responsible for monitoring safe/ out calls at first base, defered strike out calls of right handed batters, and fair ball calls down the right field line.
一垒审：负责监督一垒安全上垒或出局，右手打击者是否出棒，球落到右外野线上是否属于界外球。
2.
Second Base Umpire- Responsible for calling plays at second base.
二垒审：负责监督二垒安全上垒或出局。
3.
We singled her out from the list of applicants.
使他从一垒进入二垒
4.
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.
投手彼得见跑垒员不在垒上就猛然把球投给一垒手，一垒手跑垒员夹杀在二垒前。
5.
The first, second and third basemen and shortstop are called infielders.
一垒手、二垒手、三垒手和游击手则叫做内野手。
6.
The man to the right of the pitcher standing near first base is called the first baseman.
站在第一垒附近投手右边的叫一垒手。
7.
A position taken by a base runner away from one base in the direction of the next.
先行离垒跑垒者从所在垒向下一垒方向跑动所达到的位置
8.
Home Plate Umpire - responsible for monitoring strike/ball calls at home plate,etc.
主审：负责监督本垒上的好坏球。
9.
The runner was retired put out at first base.
跑垒者于第一垒上被刺杀出局。
10.
The runner went to second base on a wild pitch.
一记瞎设让跑垒员跑上了第二垒。
11.
Tom hit a home run with the bases loaded.
汤姆打了一支满垒全垒打。
12.
(baseball or softball) the person who plays first base.
（棒球或垒球）在一垒比赛的人。
13.
He can't see first base from home plate.
他从本垒板连一垒都看不清。
14.
To put(a runner)out on a force play.
封杀有力的一击使跑垒员出垒
15.
Third Base Umpire- responsible for monitoring safe/ out calls at third base, deferred strike out calls of left handed batters, and fair ball calls down the left field line.
三垒审：负责监督三垒安全上垒或出局，左手打击者是否出棒，球落到左外野线上是否属于界外球。
16.
a single resulting from a line drive.
打出平直球后的一垒打。
17.
hit a one-base hit, in baseball.
棒球运动中作一垒打。
18.
The infielder overthrew first Base.
内野手把球投到第一垒