1
play fullback
表示担任某个位置时，位置名词前通常不加冠词。
He plays fullback for the university team.
他在大学队担任后卫。
全卫
先理解核心含义，再看它在真实句子里的用法。
全卫
(American football) the running back who plays the fullback position on the offensive team
He plays fullback for the university team.
他在大学队担任后卫。
美式足球中的进攻位置；英式足球中的 fullback 指边后卫。
进攻后卫,跑动进攻时为半卫阻挡,传球进攻时为四分卫阻挡。
An offensive back whose primary jobs are to block in advance of the halfback on running plays and for the quarterback on passing plays.
(橄榄球)在进攻队伍中担任全卫位置的跑卫
(football) the running back who plays the fullback position on the offensive team
英式橄榄球和联盟式橄榄球中位于后卫线之后的位置；在英式橄榄球中穿15号球衣,是最后一道防线,负责接踢球。
A position behind the main line of backs in both rugby union and rugby league. In rugby union, they wear number 15 jersey at the start of play and are the last line of defence responsible for catching punts.
(美式橄榄球)橄榄球队中后卫的位置
(American football) the position of a back on a football team
The fullback took the handoff and ran through the defense.
全卫接到递球后穿过防线跑动。
In this play, the fullbacks are responsible for protecting the quarterback.
在这个战术中，全卫负责保护四分卫。
She watched the fullback catch a short pass on the sideline.
她看着那名全卫在边线接住一记短传。
表示担任某个位置时，位置名词前通常不加冠词。
He plays fullback for the university team.
他在大学队担任后卫。
at + 位置表示在场上担任的角色，常与 put、start、line up 等动词搭配，此处 fullback 前不加冠词。
The coach put her at fullback for the final quarter.
教练在最后一节让她担任后卫。
as a + 职位表示以某种身份或角色，常位于句首作状语，强调该角色下的职责或特点。
As a fullback, you have to block well.
作为后卫，你必须善于阻挡。
Not this
He is fullback on the school team.
Use this
He is a fullback on the school team.
fullback 是可数名词，单数前需要冠词；汉语“他是后卫”没有冠词，英语不能说 He is fullback，应说 He is a fullback。
Not this
He fullbacks for our team.
Use this
He plays fullback for our team.
fullback 是名词，不是动词；汉语“打后卫”容易让学习者误用成动词，英语中应说 play fullback。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
担任全卫（美式足球进攻后卫）
He played fullback for the high school team.
他在高中校队担任全卫。
首发全卫
The starting fullback missed the game due to injury.
首发全卫因伤缺席了比赛。
负责掩护跑卫的全卫
A blocking fullback clears the way for the tailback.
负责掩护跑卫的全卫为半卫开路。
全卫位置
He was recruited to play the fullback position.
他被招来打全卫位置。
全卫中路冲球战术
The coach called a fullback dive on third down.
教练在第三次进攻时叫了一个全卫中路冲球战术。
Use fullback naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记法：full(满)+back(后)，想象橄榄球后卫满载力量从后场发起冲锋。
语域：neutral 常见场景：体育新闻、比赛解说、战术分析 fullback在美国橄榄球中特指进攻方的一名跑卫（多承担开路与掩护），属于体育专项术语。通常多用于比赛解说、体育新闻和战术讨论，语域中性；日常口语中较少单独使用。
此处 football 指美式橄榄球，fullback 是进攻组的跑卫。
Dictionary facts from ECDICT, WIKTIONARY.