backstop

名词 backstop:

1. (baseball) the person who plays the position of catcher
   同义词：catcher
2. (baseball) a fence or screen (as behind home plate) to prevent the ball from traveling out of the playing field
3. a precaution in case of an emergency

动词 backstop:

1. act as a backstop

back.stop

n.（名词）
Sports A screen or fence used to prevent a ball from being thrown or hit far out of a playing area, as in baseball.
【体育运动】 场后围栏：用于阻止球被投出或打出比赛场地的一种屏障或栅栏，如在棒球比赛中
Baseball A catcher.
【棒球】 棒球捕手
Something that supports or bolsters.
托架：支撑或加强的东西
v.tr.（及物动词）
back.stopped,back.stop.ping,back.stops
To serve as a backstop for.
止住：为…用作阻挡物

To support or bolster:
支持或援助：
例句：
.The firm lacks a topflight strategic-consulting arm to backstop its technology gurus.(Alex Beam)
.这个公司缺少一流的战略协商助手来支持它的技术权威.(亚历克斯·比姆)

To substitute for (another) in an emergency.
替代：在紧急情况中替代（另一个）