1
play [position noun]
表示担任比赛中的位置时，位置名词前不加冠词，如 play cornerback。
He plays cornerback for the team.
他为球队担任角卫。
角卫；侧卫
cornerbacks — plural of cornerback
先理解核心含义，再看它在真实句子里的用法。
角卫；侧卫
a defensive player in American football positioned outside the linebackers
He plays cornerback for the team.
他为球队担任角卫。
角卫:防守方位于球两侧最外侧、主要负责防守传球的球员。
Any of the defensive players who are in position on each side farthest laterally from the ball and whose principal responsibility is to defend against passes.
The cornerback intercepted the pass and ran it back for a touchdown.
那名侧卫截住了传球，并回攻达阵得分。
Our team's best cornerback is fast enough to cover the fastest wide receiver.
我们队最好的侧卫速度快到足以盯防最快的接球手。
The training video shows how cornerbacks stay low and move sideways.
训练视频展示了侧卫如何压低重心并横向移动。
表示担任比赛中的位置时，位置名词前不加冠词，如 play cornerback。
He plays cornerback for the team.
他为球队担任角卫。
cornerback 是可数名词，泛指一个人时用冠词 a/an；复数形式为 cornerbacks。
She is a talented cornerback.
她是一名很有天赋的角卫。
Not this
He is cornerback.
Use this
He is a cornerback.
cornerback 是可数名词，单数形式作表语时不能省略冠词，须用 a cornerback。
Not this
They need two cornerback.
Use this
They need two cornerbacks.
可数名词在数字 two 后应用复数形式，cornerback 的复数是 cornerbacks。
Not this
He is a cornerback in the team.
Use this
He is a cornerback on the team.
表示“在运动队里”时，美式英语用介词 on（on the team），不用 in；in the team 不符合英语习惯。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
担任角卫
He plays cornerback for the university team.
他为大学队担任角卫。
首发角卫
She is the starting cornerback on defense.
她是防守组的首发角卫。
角卫盯防
The cornerback coverage was tight all game.
整场比赛角卫的盯防都非常严密。
角卫突袭
The coach called a cornerback blitz on third down.
教练在第三档进攻时布置了角卫突袭。
角卫位置
He was asked to switch to the cornerback position.
他被要求改打角卫位置。
Use cornerbacks naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
cornerback 拆成 corner（角落）+ back（后卫），想象他守在球场角落，像把对方外接手逼到边线角落的后卫。
语域：neutral 常见场景：美式橄榄球比赛、体育新闻报道、球队战术分析 cornerback 是美式橄榄球中一个正式的位置名称，通常出现在体育新闻、比赛解说和战术讨论等中性或正式语境中；日常口语里除非专门讨论橄榄球，否则用得不多。
以上词都以 back 结尾，末尾读音均为 /bæk/，与 cornerback 的末尾一致；但它们重音多在第一个音节，所以整词不算完全押韵。注意不要把 back 误读成 bake /beɪk/。
Dictionary facts from ECDICT, WIKTIONARY.